Develop Bugs

[Q]: repartitioning hiccup [solved]

Ok, I posted this question in 2 other threads that had info on the process (will delete the posts when this one goes live), but no responses after a couple of days. One of them is old though.
I have TWRP 2.1.1 installed. ADB seems to be working normally. Superuser is working fine after booting to android. I'm running a custom ICS ROM (Energy); read that stock ROM can cause issues repartitioning.
I started with this How-to as it looked very straight forward.
I start throwing the commands at ADB and here's what I got for my efforts:
Code:
C:\Program Files (x86)\Android\android-sdk\platform-tools>adb shell
~ # su
su
/sbin/sh: su: not found
~ # cd /data
cd /data
/data # ls
ls
/data #
decided to go ahead and check the mount command:
Code:
~ # mount
mount
rootfs on / type rootfs (rw)
tmpfs on /dev type tmpfs (rw,relatime,mode=755)
devpts on /dev/pts type devpts (rw,relatime,mode=600)
proc on /proc type proc (rw,relatime)
sysfs on /sys type sysfs (rw,relatime)
~ #
and parted just for giggles:
Code:
~ # parted /dev/block/mmcblk0
parted /dev/block/mmcblk0
GNU Parted 1.8.8.1.179-aef3
Using /dev/block/mmcblk0
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print
print
print
Model: MMC MMC08G (sd/mmc)
Disk /dev/block/mmcblk0: 7818MB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Number Start End Size File system Name Flags
1 131kB 262kB 131kB xloader
2 262kB 524kB 262kB bootloader
3 524kB 11.0MB 10.5MB dkernel
4 11.0MB 212MB 201MB ext4 dfs
5 212MB 229MB 16.8MB recovery
6 229MB 296MB 67.1MB ext4 backup
7 296MB 307MB 10.5MB boot
8 307MB 312MB 5243kB ext4 splash
9 312MB 849MB 537MB ext4 system
10 849MB 2041MB 1192MB ext4 userdata
11 2041MB 2309MB 268MB ext4 cache
12 2309MB 7690MB 5380MB fat32 media
(parted)
Ok, so that much worked. Now I tried to shrink 12 so I could double the size of 9. I want to get Switchme set up for his/her profiles and 500MB just isn't going to cut it.
That's when I hit a brick wall:
Code:
(parted) resize 12 2846 7690
resize 12 2846 7690
resize 12 2846 7690
Error: Unable to satisfy all constraints on the partition.
(parted)

One thing that jumps out at me right away is this:
Code:
adb shell
~ # su
su/sbin/sh: su: not found
It seems you are not actually rooted.
To check, enter:
Code:
adb shell
ls /system/xbin
If you don't see "su" in the list, then you don't have root permissions, which would probably prevent you from doing what you need to accomplish.

That's what I was wondering, but apps are able to ask for and receive root permission from within the ROM. SU does exist, just not where the shell is looking when in recovery.
Code:
C:\Program Files (x86)\Android\android-sdk\platform-tools>adb shell
~ # ls /system/xbin
ls /system/xbin
ls: /system/xbin: No such file or directory
~ #
I did an ls /system/xbin from adb shell and from Terminal Emulator within Android and both returned a long list containing SU.

TWRP provides an unsecured (unsecure? insecure?) boot. Whatever the terminology, it gives you immediate access to root privileges. Apparently CWMR (which was used in the OP of the thread you used) does not and so that author had to use su. For TWRP, it's not necessary and not even available. You already have root privileges as indicated by the hash prompt.
I tried resizing my /sdcard partition and it worked fine with the command you tried. I'm not sure what's going on with your storage device that it wouldn't resize it for you. At first I thought it might be mounted, but your mount command shows otherwise and parted gave me a different error when I had it mounted.
I don't know if this is going to help you, but you might try giving it the "MB" suffix in your numbers....
Code:
resize 12 2846MB 7690MB
Maybe even try changing units to bytes and giving the resize command byte sized boundaries.
Code:
unit B
print
will show you the numbers in bytes and you'd have to use the "B" suffix as in the "MB" example above.
If none of that works, you can always remove and remake the partition. For example...
Code:
rm 12
mkpartfs primary fat32 <start> <end>
name 12 media
You'd obviously need to insert acceptable boundaries for the start and end into that command. It might even be easier to just remove all 9, 10, 11, and 12 and remake/rename them, but remember 9, 10, and 11 are ext4 filesystems so the above mkpartfs command needs to be tweaked accordingly.
One thing I noticed while I was experimenting with the partition table this morning... all of the existing partitions have been allocated in 128MB chunks. I have no idea if this affects performance. I'd imagine you'd only need to stick to the 512B sector sizes, but you might want to stay with those conventions if it's not too inconvenient for you.
If you mess up the partition table, you can always go back to fastboot mode in FFF and use the...
Code:
fastboot oem format
feature to bring your partition table back to stock.
Good luck.

Wow, excellent response. Just the kind of detail I was hoping to get and it confirmed a few suspicions I had while searching the kindle threads. I'll report back on my degree of success when I get some free time to tinker.
I have a nandroid backup (also saved to PC) just in case and saved the partition table as-found. If everything gets hosed and I do an oem format I can just restore that and go or try from square one again, yes?
Sent from my TBolt with the XDA App using 1 opposable thumb

ProfEngr said:
Wow, excellent response. Just the kind of detail I was hoping to get and it confirmed a few suspicions I had while searching the kindle threads. I'll report back on my degree of success when I get some free time to tinker.
I have a nandroid backup (also saved to PC) just in case and saved the partition table as-found. If everything gets hosed and I do an oem format I can just restore that and go or try from square one again, yes?
Sent from my TBolt with the XDA App using 1 opposable thumb
Click to expand...
Click to collapse
I'd say that's a safe bet. Just be very careful about handling partitions 1 and 2 because those two are critical to getting anything to boot on your device. As long as you don't touch the xloader in partition 1 and have FFF installed in partition 2, you can rebuild the rest of it.... in theory. I only say "in theory" because I've never actually had to do it, but I don't see why it wouldn't work.
A couple of additional things I figured out after you put me to work with parted....
It looks like parted doesn't know how to make an ext4 filesystem, so mkpartfs balks if you tell it to make one. You'll have to use mkpart which just makes the partition, but not the filesystem. Then exit out of parted and use mke2fs, which despite its name knows how to make an ext4 filesystem. Like this for the cache partition...
Code:
mke2fs -T ext4 /dev/block/mmcblk0p11
The other thing is that parted sets a "msftres" flag on the fat32 filesystem it makes. The flag apparently is to tell the OS that it's reserved for Windows, or something like that. I didn't have a problem mounting in Linux and MacOS X, but the stuff I've read seems to indicate that older OS's have a problem with it. Unfortunately, the version of busybox on TWRP doesn't have a module to make a fat32 filesystem. I'm looking around to see how to get around that.
In any case, this should get you most of the way there. I'll followup if I find something out.

Ok. I used to run n*x, but use only M$ right now. Haven't touched a 'mac' since Jr High (IIgs)
Sent from my TBolt with the XDA App using 1 opposable thumb

ProfEngr said:
Ok. I used to run n*x, but use only M$ right now. Haven't touched a 'mac' since Jr High (IIgs)
Sent from my TBolt with the XDA App using 1 opposable thumb
Click to expand...
Click to collapse
I have a IIgs sitting in the basement... but it's not a mac, it's an Apple ][.
Found the last piece...
Code:
/system/bin/newfs_msdos /dev/block/mmcblk0p12
will make a fat32 filesystem correctly. I think that's all you'll need.
EDIT: OK, I must have been half asleep when I posted the above. That binary is on the stock system software I had mounted. There's nothing on TWRP to create a fat32 filesystem correctly.

Yeah, ][e was my first computer that didn't crash at the drop of a keystroke. Had an Adam tape drive model, but it froze up constantly.
Sent from my TBolt with the XDA App using 1 opposable thumb

So, I met with success following the repartition thread and tweaking it with your suggestions. I didn't quite move and many MB around as I thought, but it was enough to move me a little farther down the road with SwitchMe. At least it doesn't tell me I don't have enough memory for a 2nd profile now.
I still think it has issues with ICS or EnergyROM itself. When I created a new profile and rebooted to it I was stuck on Nova launcher instead of GO like the main profile. Strange.
I'll consider this thread to have fulfilled its usefulness. Thanks again for the help.

no device found
ProfEngr said:
So, I met with success following the repartition thread and tweaking it with your suggestions. I didn't quite move and many MB around as I thought, but it was enough to move me a little farther down the road with SwitchMe. At least it doesn't tell me I don't have enough memory for a 2nd profile now.
I still think it has issues with ICS or EnergyROM itself. When I created a new profile and rebooted to it I was stuck on Nova launcher instead of GO like the main profile. Strange.
I'll consider this thread to have fulfilled its usefulness. Thanks again for the help.
Click to expand...
Click to collapse
I get
(parted)
Error: No device found
Retry/Cancel

Unable to mount data & cache

Hi all, got my kindle fire brick. I think my partition is messed up. I bought a factory cable which able me to install twrp and i succefully(i guess) flashed energy ICS. But it prompt me "e:unable to mount '/data" e:unable to mount '/cache". I were to boot to normal boot it will just boot endlessly but i still can access to fff and twrp.i did some research on repartitioning for kindle fire but i need some guidance. Help is much appreciated
Sent from my GT-I9100 using xda app-developers app

Usually this is a fairly bad indication but do this go to the mount section in twrp and make sure there are no checks in the boxes of data and system if so uncheck them, I know you said data and cache but this should have a check in the box then try a reboot also were you previously using cwmr? If so you may have been bitten by the bug a very unsightly one that generally means the death of your kindle unless you know how to repartition around a broken emmc. What did you do prior to this that caused this to happen?
Also energy is not the best for good mounting just saying...

I was using fireparted to backup my partition when my pc suddenly shut down. Thats when everything screws up. Also my data and cache are not able to check or uncheck. I hope theres a kind soul to guide me through this process
Sent from my GT-I9100 using xda app-developers app

If you ask me I would say its toast but maybe someone knows a way to restore factory partitions I know many are looking for a solution for thier parts only kindle....

From what I understand...
Code:
fastboot oem format
...will rewrite your partition table to stock. And as long as you haven't messed with the partition sizes, your data will stay intact.
Enter:
Code:
shell cat /proc/partitions
To get a list of your current partitions and sizes to check to see if they even exist to begin with. And if so, it's likely just a case of broken or missing mountpoints.
Now, whether or not "fastboot oem format" will restore broken or missing mountpoints, I couldn't tell you for sure; I've never had to try it. But in your situation, it probably couldn't hurt to try.
You can also recreate mountpoints manually if needed.
[Edit:] It has just been explained to me that "fastboot oem format" won't do anything about mountpoints.

Assuming you can get into TWRP and run adb shell, execute the following command...
Code:
adb shell parted /dev/block/mmcblk0 unit b print
Note: version 2.2.0 is missing the parted binary, so you'll need to use 2.1.1
This will give you a detailed layout of your storage device and the filesystems for each partition. I'm running from memory here, but the right column should show the filesystem types it sees for that particular partition. For userdata (which is mounted as data) and cache, those should be ext4. If you don't see that, you need to remake those partitions.
Code:
adb shell mke2fs -T ext4 /dev/block/mmcblk0p10
adb shell mke2fs -T ext4 /dev/block/mmcblk0p11
Then you can repeat the parted command above and see if the commands worked. If the commands were successful, you can use the mount command or it's probably easier to just reboot into TWRP and it should do it automatically.

kinfauns said:
Assuming you can get into TWRP and run adb shell, execute the following command...
Code:
adb shell parted /dev/block/mmcblk0 unit b print
Note: version 2.2.0 is missing the parted binary, so you'll need to use 2.1.1
This will give you a detailed layout of your storage device and the filesystems for each partition. I'm running from memory here, but the right column should show the filesystem types it sees for that particular partition. For userdata (which is mounted as data) and cache, those should be ext4. If you don't see that, you need to remake those partitions.
Code:
adb shell mke2fs -T ext4 /dev/block/mmcblk0p10
adb shell mke2fs -T ext4 /dev/block/mmcblk0p11
Then you can repeat the parted command above and see if the commands worked. If the commands were successful, you can use the mount command or it's probably easier to just reboot into TWRP and it should do it automatically.
Click to expand...
Click to collapse
Pardon me for my Noob-ness, are the code to be execute on pc or on TWRP?

dean11 said:
Pardon me for my Noob-ness, are the code to be execute on pc or on TWRP?
Click to expand...
Click to collapse
Step back a bit and figure out how all of these things work together by reading the first 3 posts here...
http://forum.xda-developers.com/showthread.php?t=1552547
It will be a lot easier for you to understand what you are doing and why you are doing them. It will also explain how and where to run the commands.

kinfauns said:
Step back a bit and figure out how all of these things work together by reading the first 3 posts here...
http://forum.xda-developers.com/showthread.php?t=1552547
It will be a lot easier for you to understand what you are doing and why you are doing them. It will also explain how and where to run the commands.
Click to expand...
Click to collapse
OH MY GOOOOD!!!! MY KINDLE IS ALIVE!!!! THANK YOU SO MUCH @kinfauns!

kinfauns said:
Assuming you can get into TWRP and run adb shell, execute the following command...
Code:
adb shell parted /dev/block/mmcblk0 unit b print
Note: version 2.2.0 is missing the parted binary, so you'll need to use 2.1.1
This will give you a detailed layout of your storage device and the filesystems for each partition. I'm running from memory here, but the right column should show the filesystem types it sees for that particular partition. For userdata (which is mounted as data) and cache, those should be ext4. If you don't see that, you need to remake those partitions.
Code:
adb shell mke2fs -T ext4 /dev/block/mmcblk0p10
adb shell mke2fs -T ext4 /dev/block/mmcblk0p11
Then you can repeat the parted command above and see if the commands worked. If the commands were successful, you can use the mount command or it's probably easier to just reboot into TWRP and it should do it automatically.
Click to expand...
Click to collapse
I have the similar situation.
And when I use "parted" to check my kidle partition, there is no cache, and the userdata is ext2.
Number Start End Size File system Name Flags
1 131072B 262143B 131072B xloader
2 262144B 524287B 262144B bootloader
3 524288B 11010047B 10485760B dkernel
4 11010048B 212336639B 201326592B ext4 dfs
5 212336640B 229113855B 16777216B recovery
6 229113856B 296222719B 67108864B ext4 backup
7 296222720B 306708479B 10485760B boot
8 306708480B 311951359B 5242880B ext4 splash
9 311951360B 848822271B 536870912B ext4 system
10 848822272B 849000447B 178176B ext2 userdata
12 2448000000B 7748000255B 5300000256B fat32 media msftres
When I use the mke2fs to change the file system type, it returns this error
Not enough space to build proposed filesystem while setting up superblock.
Please help!
Thank you in advance!

june12 said:
I have the similar situation.
And when I use "parted" to check my kidle partition, there is no cache, and the userdata is ext2.
Number Start End Size File system Name Flags
1 131072B 262143B 131072B xloader
2 262144B 524287B 262144B bootloader
3 524288B 11010047B 10485760B dkernel
4 11010048B 212336639B 201326592B ext4 dfs
5 212336640B 229113855B 16777216B recovery
6 229113856B 296222719B 67108864B ext4 backup
7 296222720B 306708479B 10485760B boot
8 306708480B 311951359B 5242880B ext4 splash
9 311951360B 848822271B 536870912B ext4 system
10 848822272B 849000447B 178176B ext2 userdata
12 2448000000B 7748000255B 5300000256B fat32 media msftres
When I use the mke2fs to change the file system type, it returns this error
Not enough space to build proposed filesystem while setting up superblock.
Please help!
Thank you in advance!
Click to expand...
Click to collapse
I don't know who or what did that to your partition table, but partitions 10-12 are not right. It looks like mke2fs is complaining because your userdata partition is only ~178KB. I'm also a bit concerned that you've extended the media partition as far as you have. You might have some additional problems there.
The easiest way for you to get started on a fix is to get into fastboot mode with FFF and run...
Code:
fastboot oem format
That will bring your partition table back to stock, so you can run those mke2fs commands to remake those filesystems on the two partitions. You'll also have to remake the media partition in parted. You can find some instructions on how to do that here...
http://forum.xda-developers.com/showthread.php?t=1658885

Hey,
My current ROM is fine, but I can't mount data & cache in TWRP.
Nothing happens when I click mount data or mount cache in TWRP 2.6.3.1
I reflashed twrp two times and checked the md5sum.
When I try to backup my rom:
When I try a factory reset:
This is what I tried in fastboot:
Code:
fastboot oem format
...
OKAY [ 0.064s]
finished. total time: 0.065s
fastboot oem idme bootmode 4000
...
OKAY [ 0.081s]
finished. total time: 0.081s
fastboot reboot
rebooting...
finished. total time: -0.000s
adb shell cat /proc/partitions
major minor #blocks name
7 0 8348 loop0
179 0 7553024 mmcblk0
179 1 128 mmcblk0p1
179 2 256 mmcblk0p2
179 3 10240 mmcblk0p3
179 4 196608 mmcblk0p4
179 5 16384 mmcblk0p5
179 6 65536 mmcblk0p6
179 7 10240 mmcblk0p7
179 8 5120 mmcblk0p8
179 9 524288 mmcblk0p9
179 10 1164288 mmcblk0p10
179 11 262144 mmcblk0p11
179 12 5254144 mmcblk0p12
179 64 512 mmcblk0boot1
179 32 512 mmcblk0boot0
254 0 8347 dm-0
The parted command isn't working for me.
I have never repartitioned them as far as I know.
Wha't wrong with my partitions?

Still Stuck on TWRP, but now able to see device via Linux!

Hey all,
So I was able to run KFU and it got me stuck on the boot screen. Got help with that and was able to run KFU again but it got stuck on removing boot check and now I'm stuck with the TWRP homescreen.
My device was recognized in device manager but in the KFU it says ADB Status: Offline and Boot Status Unknown. ADB Device List is empty.
I am unable to mount the device from TWRP it keeps failing. I am also unable to mount the sdcard partition what-so-ever.
Pooch sent me info on how to boot up via usb drive into Linux (Mint) and I can find the device in the adb device list but I am not familiar enough with Linux to know how to push the ROM to the device as well as a better/newer version of TWRP. Any help in this would be greatly appreciated. Thanks.

I sent you full instructions on how to proceed in a pm the reason I chose that system is because its nice and small it will get you going.. you only have 150 mb to work with follow instructions and you should be fine

Issues persist
Hello! So, I was able to detect my device via adb in Linux with the help of ThePooch. (thanks a bunch!!!) However we have a small problem.
I am unable to mount my SD Card partition in TWRP at all. I wasn't sure why so we tried a bunch of stuff: We tried pushing a ROM, We tried mounting it via adb in terminal on Linux... We tried "fastboot oem format"... We tried adb shell echo /dev/block/mmcblk0p12 >> /sys/devices/platform/usb_mass_storage/lun0/file
We tried updating the recovery to TWRP 2.2.2.0.
We tried a lot of things however we were very unsuccessful in this and I am still unable to click "Mount SD Card" in TWRP or format it or wipe it.
What's confusing is that I was able to push files (zips) to the sd card temporarily and see them when we click "install" on TWRP however they fail to install and anything pushed to the sd card is, or course, erased on rebooting.
Really don't know what to do at this point as I am at a loss and would appreciate any assistance in this. Thanks so much!

Boot into recovery and enter:
Code:
adb shell
parted /dev/block/mmcblk0
print
...and post the results here.

soupmagnet said:
Boot into recovery and enter:
Code:
adb shell
parted /dev/block/mmcblk0
print
...and post the results here.
Click to expand...
Click to collapse
Model: MMC MMC08G (sd/mmc)
Disk /dev/block/mmcblk0: 7818MB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Number Start End Size File system Name Flags
1 131kB 262kB 131kB xloader
2 262kB 524kB 262kB bootloader
3 524kB 11.0MB 10.5MB dkernel
4 11.0MB 212MB 201MB ext4 dfs
5 212MB 229MB 16.8MB recovery
6 229MB 296MB 67.1MB ext4 backup
7 296MB 307MB 10.5MB boot
8 307MB 312MB 5243kB ext4 splash
9 312MB 849MB 537MB ext4 system
10 849MB 2041MB 1192MB ext4 userdata
11 2041MB 2309MB 268MB ext4 cache
12 2309MB 7690MB 5380MB media

hmm wish I knew what I was looking at it looks to me like some things still exist even after a full wipe if I`m reading it correct glad soup knows what to look for

sphinxdog said:
Really don't know what to do at this point as I am at a loss and would appreciate any assistance in this. Thanks so much!
Click to expand...
Click to collapse
I've ran into this a couple of times and what I usually do is to delete the "media" partition, create it again with parted, name it "media", and then finally let the stock Kindle Fire recovery repair it. You may be able to skip the delete/create part and just boot into the stock recovery to see if it can repair it.

probably would work if in fact he had a working system but there isnt a bootable one at least..

Code:
Model: MMC MMC08G (sd/mmc)
Disk /dev/block/mmcblk0: 7818MB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Number Start End Size File system Name Flags
1 131kB 262kB 131kB xloader
2 262kB 524kB 262kB bootloader
3 524kB 11.0MB 10.5MB dkernel
4 11.0MB 212MB 201MB ext4 dfs
5 212MB 229MB 16.8MB recovery
6 229MB 296MB 67.1MB ext4 backup
7 296MB 307MB 10.5MB boot
8 307MB 312MB 5243kB ext4 splash
9 312MB 849MB 537MB ext4 system
10 849MB 2041MB 1192MB ext4 userdata
11 2041MB 2309MB 268MB ext4 cache
12 2309MB 7690MB 5380MB media
Thepooch said:
hmm wish I knew what I was looking at it looks to me like some things still exist even after a full wipe if I`m reading it correct glad soup knows what to look for
Click to expand...
Click to collapse
The 'parted' program manipulates the partition table, which basically tells the device how the storage partitions are laid out. The 'print' command used to obtain the output above just displays the information stored in the partition table. I set the output in CODE so it's easier to read. The bottom portion of the data is the more interesting part and you can see the column names there...
Number - This is the partition number. You may have seen "/dev/block/mmcblk0p5" in the past referring to the recovery partition. That number after the letter 'p' refers to the partition number.
Start - This is the offset value for where the partition begins.
End - This is the offset value for where the partition ends.
Size - This is the size of the partition calculated by the difference of the two offset values above. Imagine a ruler where your "Start" offset is the 1 inch tick mark and your "End" offset is the 6 inch tick mark. The "Size" between the tick marks... 6 - 1 is 5.
File system - This is how the partition has been formatted... ext4 is a commonly used filesystem for linux. It's blank if parted doesn't recognize the filesystem type or none has been specified.
Name - The name given to the partition. You'll recognize some as ones you've used to refer to these partitions in fastboot. FYI, userdata typically gets mounted to /data and media gets mounted to /sdcard.
Flags - Used to indicate special characteristics of the filesystem.
The significant part of the output above is the missing filesystem for the media partition. It should have a fat32 filesystem. I'll leave it to soupmagnet to explain how to fix it.

kinfauns said:
The significant part of the output above is the missing filesystem for the media partition. It should have a fat32 filesystem.
Click to expand...
Click to collapse
As always, kinfains is correct. I've dealt with an issue similar to this on my own device pretty recently, so I knew immediately what we'd be dealing with. So you're going to remove, recreate and repartition your sdcard and then you'll be all set. Needless to say, any data on your sdcard will be lost, if it isn't already. Not to worry though, considering everything you have gone through up until this point, this part should be pretty painless.
Code:
adb shell
parted /dev/block/mmcblk0
rm 12
mkpartfs primary fat32 2309 7690
name 12 media
quit
mount /sdcard
exit
adb reboot
You may not need to reboot, but in my case, I did. You'll then be able to mount your sdcard over USB, or use "adb push" to transfer a ROM to flash in recovery. Just remember to wipe System and "Factory Reset" in recovery first, or you may very well find yourself in the exact same situation as before.
Have fun.

SUCCESS!!!! That took care of it! And I was able to load up the ROM with no problem. Thanks for all the help ThePooch & SoupMagnet!!!
Sent from my Kindle Fire using xda app-developers app

[How to] Determine dd Parameters For All LG G4 Models

[How to] determine dd parameters for all LG G4 models
IMPORTANT:
Only for advanced users!
You are an advanced user if you know exactly what you are doing.
You are an advanced user if you know what to do if something went wrong.
You are NOT an advanced user if you know how to do copy+paste.
You can bring your smartphone into a state, so it no longer works.
I am not responsible for anything. The following instructions are only suggestions.
Hello,
everyone knows how to root the LG G4 with the "low effort root" method.
They copied the system partition to an ".img" file, rooted it and copied it back to the "system" partition.
Many users wonder how to get the right parameters for the "dd" commands.
Please read the complete guide and be sure that you understand it until you execute a command!
Information:
Code:
dd if=/inputfile bs=8192 count=12345 of=/outputfile
if = Input File
of = Output File
bs = Blocksize in bytes (default is 512 - to increase copy speed use multiple of 512 e.g. 8192)
count = how many blocks
skip = skip blocks before start reading
seek = skip blocks before start writing
more info: http://man7.org/linux/man-pages/man1/dd.1.html
There are different models of the LG G4 on the market.
We know that the system partition is different depending on the model of the G4.
As an example I will show you how to calculate the parameters for the LG G4 H815 (International Model).
What you need:
Windows with Send_Command.exe
Instructions:
At first we need to know where the "system" partition starts (first sector) and how big it is (partition size).
I used the first method to find these values. But I recommend the second method because it's easier.
First method (difficult method, extracting the GPT and using "gdisk" in linux to read the partition info)
What you need:
Linux with "gdisk" installed
Instructions:
Put your smartphone to "Download Mode" and connect it to the Send_Command.exe command prompt.
We need to copy the partition table to the internal storage.
The partition table of GPT (GUID Partition Table) has a size of 16384 bytes and starts at LBA2.
Each LBA has a size of 512 bytes. Because we start at LBA0 we need to add 1024 bytes.
In summary 16384 + 1024 = 17408 (bytes).
Execute the following command:
Code:
dd if=/dev/block/mmcblk0 bs=1 count=17408 of=/data/media/0/gpt_backup.img
Enter "LEAVE" to restart your phone.
You will find the (very small) file "gpt_backup.img" on your internal storage.
Switch to Linux:
Copy the file to your Linux and open the terminal. Then type this:
Code:
gdisk /yourpath/gpt_backup.img
Some warnings will occur. Ignore them.
You will see:
Code:
Command (? for help):
Enter "p" and hit "enter".
You will get a list of the partitions.
Scroll up a bit and check that you see:
"Logical sector size: 512 bytes"
Scroll down and look for the "system" partition.
You will find a line similar to this:
Code:
47 884736 9363455 4.0GiB FFFF system
Now you know the number of the "system" partition is "47".
You will see:
Code:
Command (? for help):
Type "i" and hit "enter".
You will be asked the partition number.
Enter it and hit "enter".
You will see something conatining lines similar to this:
Code:
First sector: 884736
Last sector: 9363455
Partition size: 8478720
Partition name: 'system'
We need the values from "First sector" and "Partition size".
Second method (easier method, just using "adb shell" to read the partition info)
What you need:
adb shell
usb debugging enabled
To get the "logical sector size" use:
cat /sys/block/mmcblk0/queue/logical_block_size
It should be 512
smason said:
To find in any smartphone the offset and the size of /system:
$ adb shell
[email protected]:/ $ ls -la /dev/block/bootdevice/by-name/system
ls -la /dev/block/bootdevice/by-name/system
lrwxrwxrwx root root 2015-01-02 10:50 system -> /dev/block/mmcblk0p47
[email protected]:/ $ cd /sys/block/mmcblk0/mmcblk0p47
cd /sys/block/mmcblk0/mmcblk0p47
[email protected]:/sys/block/mmcblk0/mmcblk0p47 $ cat start
cat start
884736
[email protected]:/sys/block/mmcblk0/mmcblk0p47 $ cat size
cat size
8478720
[email protected]:/sys/block/mmcblk0/mmcblk0p47 $
so:
offset = 512 * 884736 = 452984832
partition size = 512 * 8478720 = 4341104640
Cheers!
Click to expand...
Click to collapse
So "first sector" is the value from "cat start" (884736).
The "partiton size" is the value from "cat size" (8478720).
Now the mathematics (using the values from above):
Logical sector size = 512 (I never saw something different on LG G4 smartphones)
Assuming bs=8192
skip and seek: "First sector" * "Logical sector size" / bs
884736 * 512 / 8192 = 55296
count: "Partition size" * "Logical sector size" / bs
8478720 * 512 / 8192 = 529920
That was an example for the H815 (International Model).
Use your own values to calulate the "dd" parameters!
Back to Windows:
Put your smartphone to "Download Mode" and connect it to the Send_Command.exe command prompt.
Now you can copy your "system" partition to "system.img" with the following command:
Code:
dd if=/dev/block/mmcblk0 bs=8192 skip=55296 count=529920 of=/data/media/0/system.img
Replace the values with the ones you calculated for your model!
Now you could copy the "system.img" to your Linux and root it or do everything else you want.
Important: Do NOT delete the original "system.img" from your internal storage as long as you are not 100% sure your G4 is stable.
If your modifications don't work, you can copy back the original "system" partition (with "dd").
To copy the modified "system_changed.img" back to the "system" partition use the following command:
Code:
dd if=/data/media/0/system_changed.img bs=8192 seek=55296 count=529920 of=/dev/block/mmcblk0
Replace the values with the ones you calculated for your model!
Important: Be sure to use "skip" when reading and "seek" when writing.
The "dd" command should take about a minute.
Did the instructions help you?
Please give a "Thanks!"
Thank you

Hi,
thanks for this great post.
I just have one question. With your formulas and using 8K block size, I get a floating point number as result. So I used a block size of 4K instead, and I get an even number. This seems better to me so I went with it, as I believe smaller block sizes are always ok?
I'm just wondering one thing which seems not right to me. My system partition is reported to be 2.5GB:
Partition number (1-42): 39
Partition GUID code: EBD0A0A2-B9E5-4433-87C0-68B6B72699C7 (Microsoft basic data)
Partition unique GUID: A8725BAA-9E45-B2F8-8FA3-8C972F60F0CF
First sector: 836608 (at 408.5 MiB)
Last sector: 6074573 (at 2.9 GiB)
Partition size: 5237966 sectors (2.5 GiB)
Attribute flags: 1000000000000000
Partition name: 'system'
So with the formulas:
FACTOR 512 / 4096 = 0.125
skip and seek: "First sector" * "Logical sector size" / bs
836608 *FACTOR = 104576
count: "Partition size" * "Logical sector size" / bs
8478720 * FACTOR = 1059840
If I now run the dd command:
dd if=/dev/block/mmcblk0 bs=4096 skip=104576 count=1059840 of=/storage/external_SD/system.img
I get a file system.img which is 4096 MB. Should it not be 2.5GB as my original system partition?
If I use bs=512 (the default) and type
dd if=/dev/block/mmcblk0 bs=512 skip=836608 count=8478720 of=/storage/external_SD/system.img
I get a system.img of the right size (bit over 2.5GB).
I think the block size to use for "skip" is to be specified with the option ibs=XXX, not bs=XXX which only applies to "count" (according to man dd). I tried the ibs option, but the command then just doesn't work on Send_Command.exe. It doesn't even print an error but simply returns immediately.
Cheers
Jen

Hi,
which phone do you have?
Your calculation seems wrong. It's ok to use BS with 4k. I could be a bit slower then 8k, but that doesn't matter.
BUT: Look at your "count" value. Your partition size is 5237966. You used 8478720 (the value from my G4(H815EU) example). Thats wrong!!!
How to calculate with 1k and your values:
bs=1024
skip=836608*512/1024=418304
count=5237966*512/1024=2618983
Please check my calulation!!!
It's interesting, that the Send_Command shell has access to your external sd card...
I think the block size to use for "skip" is to be specified with the option ibs=XXX, not bs=XXX which only applies to "count" (according to man dd).
Click to expand...
Click to collapse
No. "bs" is the right parameter.
If you use "bs" it sets "ibs" and "obs" to the value of "bs".
Just do "dd --help" on a linux system for more details.

Hi Dominik,
oh my, how embarrassing I actually did take the wrong value from the example you posted. I used my value (the 5237966) for calculating the parameters with bs=8K, and got a floating value, so tried 4K instead... and the wrong value must have snug in. Oups.
I also get floating value on 4K now that you've pointed my mistake out:
5237966 * 512/4096= 654745.75
If I rounded this up, would this not mean that I copy a tiny bit of the next partition on the image? And if I then use the image to restore, would I not run the risk to damage something in the following partition?
Anyway, it's not a huge drama as I can just use bs=512 and it works.
Yes I have access to the SD card, the image also has copied there successfully. I was also surprised because I read in the forums that it's not possible.
I found it out with the "df" command, as the SD was listed there. I needed to use it because there's no room on my internal storage (it's a ridiculous 8GB on the LG H735) to store the image there.
My system partition is only 2.5GB so I don't think I have to reformat, but you are right it would be better to use ext4.

Ok
I removed my information about formatting the sd card.
You dont't have to format it. FAT32 is ok.
So you can use your sd card on systems which don't support ext4 too.

I have the LG G4S (H735). It's unusable without rooting as it only has 8GB internal memory. That's why I'm trying to root it now.

jen.magnolis said:
I have the LG G4S (H735). It's unusable without rooting as it only has 8GB internal memory. That's why I'm trying to root it now.
Click to expand...
Click to collapse
Ok, good luck.
Please open a new thread if you have questions about rooting your phone.
Or is there already one? Maybe these?
http://forum.xda-developers.com/g4/help/rooting-lg-h735-g4-beat-t3192491
http://forum.xda-developers.com/g4/general/lg-g4s-world-root-lg-devices-t3231759/page7
Oh. Just saw that you are already there

dominik-p said:
Ok, good luck.
Please open a new thread if you have questions about rooting your phone.
Or is there already one? Maybe these?
http://forum.xda-developers.com/g4/help/rooting-lg-h735-g4-beat-t3192491
http://forum.xda-developers.com/g4/general/lg-g4s-world-root-lg-devices-t3231759/page7
Oh. Just saw that you are already there
Click to expand...
Click to collapse
I just created a new thread too to focus on the particular problem I have:
http://forum.xda-developers.com/g4/general/rooting-lg-g4s-h735-t3243549

this guide helped in dumping boot and recovery partitions.
thank you very much sir! i successfully dumped my boot and recovery partition using dd in my mediatek device by following your guide.

sparksthedev said:
thank you very much sir! i successfully dumped my boot and recovery partition using dd in my mediatek device by following your guide.
Click to expand...
Click to collapse
Congratulations
Did you use the first (more komplex) oder the second method for your device?
I saw that you had problems in this thread:
http://forum.xda-developers.com/showthread.php?p=65907557#post65907557
And you wrote a guide for MTK devices here:
http://forum.xda-developers.com/general/general/guide-dumping-boot-img-recovery-img-t3339530
This doesn't work with the LG G4, but I think it will help many others.
Thank you

My sister asked me to root her phone. It seems more complicated than anything I did in the past (HTC Wildfire, Galaxy Core Plus, Xperia M4A).
I tried this tutorial and it kinda worked, but I can't mount image I got, so it's useless (image, not tutorial!).
Phone is LG-H736 (Beat). I got this result in gdisk:
Code:
Partition number (1-42): 39
Partition GUID code: EBD0A0A2-B9E5-4433-87C0-68B6B72699C7 (Microsoft basic data)
Partition unique GUID: A9520AE6-ABC6-F107-E8FE-B37C4C30CB77
First sector: 836608 (at 408.5 MiB)
Last sector: 6074573 (at 2.9 GiB)
Partition size: 5237966 sectors (2.5 GiB)
Attribute flags: 1000000000000000
Partition name: 'system'
The 8K bs gave me floating point result, so I used 0,5K.
So the dd command were:
Code:
dd if=/dev/block/mmcblk0 bs=512 skip=836608 count=5237966 of=/storage/external_SD/system.img
BTW, I had access to SDCard and I didn't need to open ports...
EDIT: I got the system.img. The problem was I haven't got enough space on SD card.
But now I bricked it...
https://forum.xda-developers.com/g4/help/softbricked-g4-beat-lg-h735-t3959237

[GUIDE][ACRO S] nAOSP 6.0 Full Flashing Guide. ULTIMATE N00B GUIDE! (ROM+Repartition)

Hi Everyone,
You might have seen my last Guide about Flashing BPaul's 5.0 and 5.1.1
Here's my another Guide for Mickybart's nAOSP 6.0 for ACRO S
Credits:
@mickybart (Developer)
I see people complaining about the Guide available by mickybart is too BIG and Complicated.
Actually it looks Big but it's not!
Hope this Guide HELPS YOU ALL. I made it as simple as I can.
I REQUEST EVERYONE TO PLEASE READ FULL GUIDE
EVEN A GUY WHO KNOWS NOTHING, CAN FOLLOW THIS GUIDE!
(Atleast he/she must have a BRAIN)
Just REMEMBER, for Marshmallow we'll merge /data + /sdcard INTO ONE and change file-system from ext4 to f2fs.
That means, before we were getting 11.2GB of Internal memory AND 2GB for APPS.
Now after Repartition it'll become 13.2GB
NOTE: I'm NOT responsible if you damage your phone while caring out any process. As a NewBie or a N00B can make many silly mistakes. DO AT YOUR OWN RISK
Click to expand...
Click to collapse
We'll cover below major steps:
1. Repartitioning
2. File-System to f2fs
3. Flashing nAOSP 6.0
Pre-Requirities: (Download ALL and Keep in your PC)
Downloads:
nAOSP 6.0 ROM (Download 6.0)
Minimal ADB and Fastboot
OpenGapps ARM-6.0 (Download ARM -> 6.0 -> Mini)
Here We Begin:
First of all BACK-UP everything and save it to PC.
Install Minimal ADB and Fatboot into your Windows PC.
Now Switch off your Phone (ACRO S) and
Connect Phone in Fastboot Mode (Power button + Connect USB to PC)
(If phone shows BLUE LED lighten, then everything is going right! IF NOT then Check for Fastboot drivers into your PC)
Now IN PC Open nAOSP.zip and Extract recovery.img to Minimal ADB and Fastboot folder.
(must be installed in c:/program files (x86)/minimal adb and fastboot/keep here)
Open Minimal ADB and Fastboot and type below commands;
~fastboot devices
~fastboot flash boot recovery.img
~fastboot reboot
(Now your phone will restart in TWRP recovery)
----------REPARTITIONING:----------
NOW ACTUAL REPARTITIONING STARTS:
In TWRP GoTo Mount -> uncheck everything (system,data,cache etc)
In PC in Minimal ADB and fastboot type below;
~adb shell
~fdisk -l /dev/block/mmcblk0
Now You'll see some information-table, just copy everything and keep safe. It'll help you.
NOW CONCENTRATE ON LAST TWO ROWS IN THAT INFO-TABLE
/dev/block/mmcblk0p14 49247 261695 7000024 83 Linux
/dev/block/mmcblk0p15 261696 954240 22161424 83 Linux
(Values for your phone may differ)
NOW type below command; (make sure VALUES IN SAME COLOR MATCHES ACCORDING TO YOURS)
fdisk /dev/block/mmcblk0
Command (m for help): p
Command (m for help): d
Partition number (1-15): 15
Command (m for help): d
Partition number (1-15): 14
Command (m for help): n
First Cylender (769-954240, default 769): 49247
Last cylinder or +size or +sizeM or +sizeK (49247-954240, default 954240): 954240
Command (m for help): t
Partition number (1-14): 14
Hex code (type L to list codes): 83
Command (m for help): w
The partition table has been altered.
Calling ioctl() to re-read partition table
YOU'll SEE A ERROR, JUST IGNORE IT
Once partition is Done. Just reboot device. JUST REBOOT!
DONE!
----------Changing File-Syatem to f2fs----------
Into TWRP:
Wipe
Advanced Wipe
Select Data
Repair or Change File system
Change File System
F2FS
Swipe to Change
GO back and do SAME for /cache to change File-System to f2fs
Once it's Done. Just reboot device. JUST REBOOT!
If you see 0MB or any wrong value for data after the reboot, try to format data (Wipe/Format Data).
In Extreme case, convert data to ext4 and convert back to f2fs. It'll hopefully work for you.
DONE!
----------Flashing nAOSP ROM 6.0----------
Copy the Downloaded nAOSP.zip AND OpenGapps.zip in Memory Card
IN TWRP:
Install
Select nAOSP.zip
Add more Zips (IMP)
Select OpenGapps.zip (IMP)
Swipe to Change
(after it's done)
Clear Cache and Dalvic Cache
Reboot
DONE!
(For the first time it can take a long to boot-up. So just don't worry and sit back!)
If you Found Above Post Helpful, There's a Thumbs UP Button Below, Don't Forget To Click It.
Regards,
hitman-xda

hi hitman thanks for your explaination . but im a bit confused about the repartition on the last cylinder. is it need to change 954240 because mine just 400k++
First Cylender (769-954240, default 769): 49247
Last cylinder or +size or +sizeM or +sizeK (49247-954240, default 954240): 954240

adiawie said:
hi hitman thanks for your explaination . but im a bit confused about the repartition on the last cylinder. is it need to change 954240 because mine just 400k++
First Cylender (769-954240, default 769): 49247
Last cylinder or +size or +sizeM or +sizeK (49247-954240, default 954240): 954240
Click to expand...
Click to collapse
Please post the whole table?
I can't understand your problem.

hitman-xda said:
Please post the whole table?
I can't understand your problem.
Click to expand...
Click to collapse
im not save the installation table logs . i flashed back to stock rom because internal storage and sd card not detect. maybe i miss something
i'll try flash again later
@Hitman is it your acro works fine with this new rom or unstable?

Hi hitman
My problem is the same as adiawie
Im save the installation table logs :
~ # fdisk -l /dev/block/mmcblk0
Disk /dev/block/mmcblk0: 15.9 GB, 15925772288 bytes
4 heads, 16 sectors/track, 486016 cylinders
Units = cylinders of 64 * 512 = 32768 bytes
Device Boot Start End Blocks Id System
/dev/block/mmcblk0p1 1 65 2048 f0 Linux/PA-RISC boot
Partition 1 does not end on cylinder boundary
/dev/block/mmcblk0p2 * 65 81 512 4d Unknown
Partition 2 does not end on cylinder boundary
/dev/block/mmcblk0p3 129 768 20480 48 Unknown
Partition 3 does not end on cylinder boundary
/dev/block/mmcblk0p4 769 477120 15243264 5 Extended
Partition 4 does not end on cylinder boundary
/dev/block/mmcblk0p5 785 800 512 46 Unknown
/dev/block/mmcblk0p6 833 928 3072 4a Unknown
/dev/block/mmcblk0p7 961 1056 3072 4b Unknown
/dev/block/mmcblk0p8 1089 1184 3072 58 Unknown
/dev/block/mmcblk0p9 1217 1376 5120 70 Unknown
/dev/block/mmcblk0p10 1409 1664 8192 83 Linux
/dev/block/mmcblk0p11 1665 2176 16384 f0 Linux/PA-RISC boot
/dev/block/mmcblk0p12 2177 34944 1048576 83 Linux
/dev/block/mmcblk0p13 34945 42944 256000 83 Linux
/dev/block/mmcblk0p14 42945 108480 2097152 83 Linux
/dev/block/mmcblk0p15 108481 477120 11796480 c Win95 FAT32 (LBA)
~ #
........
Command (m for help): d
Partition number (1-15): 15
Command (m for help): d
Partition number (1-14): 14
Command (m for help): n
First cylinder (769-477120, default 769): 49247
Last cylinder or +size or +sizeM or +sizeK (49247-477120, default 477120): 954240
Value is out of range
.........
Thank you for your help

adiawie said:
im not save the installation table logs . i flashed back to stock rom because internal storage and sd card not detect. maybe i miss something
i'll try flash again later
@Hitman is it your acro works fine with this new rom or unstable?
Click to expand...
Click to collapse
I can't tell anything what went wrong for you, without seeing the table.
Is your stock ROM running well?
And yes my Acro S is running well and almost stable with this ROM.

jamis66 said:
Hi hitman
My problem is the same as adiawie
Im save the installation table logs :
~ # fdisk -l /dev/block/mmcblk0
Disk /dev/block/mmcblk0: 15.9 GB, 15925772288 bytes
4 heads, 16 sectors/track, 486016 cylinders
Units = cylinders of 64 * 512 = 32768 bytes
Device Boot Start End Blocks Id System
/dev/block/mmcblk0p1 1 65 2048 f0 Linux/PA-RISC boot
Partition 1 does not end on cylinder boundary
/dev/block/mmcblk0p2 * 65 81 512 4d Unknown
Partition 2 does not end on cylinder boundary
/dev/block/mmcblk0p3 129 768 20480 48 Unknown
Partition 3 does not end on cylinder boundary
/dev/block/mmcblk0p4 769 477120 15243264 5 Extended
Partition 4 does not end on cylinder boundary
/dev/block/mmcblk0p5 785 800 512 46 Unknown
/dev/block/mmcblk0p6 833 928 3072 4a Unknown
/dev/block/mmcblk0p7 961 1056 3072 4b Unknown
/dev/block/mmcblk0p8 1089 1184 3072 58 Unknown
/dev/block/mmcblk0p9 1217 1376 5120 70 Unknown
/dev/block/mmcblk0p10 1409 1664 8192 83 Linux
/dev/block/mmcblk0p11 1665 2176 16384 f0 Linux/PA-RISC boot
/dev/block/mmcblk0p12 2177 34944 1048576 83 Linux
/dev/block/mmcblk0p13 34945 42944 256000 83 Linux
/dev/block/mmcblk0p14 42945 108480 2097152 83 Linux
/dev/block/mmcblk0p15 108481 477120 11796480 c Win95 FAT32 (LBA)
~ #
........
Command (m for help): d
Partition number (1-15): 15
Command (m for help): d
Partition number (1-14): 14
Command (m for help): n
First cylinder (769-477120, default 769): 49247
Last cylinder or +size or +sizeM or +sizeK (49247-477120, default 477120): 954240
Value is out of range
.........
Thank you for your help
Click to expand...
Click to collapse
Well, I think I can fix you!
USE below values while repartitioning and rest of the procedure is same.
For the FIRST CYLINDER : 42945
For LAST CYLINDER: 477120
Regards,
hitman-xda

hitman-xda said:
I can't tell anything what went wrong for you, without seeing the table.
Is your stock ROM running well?
And yes my Acro S is running well and almost stable with this ROM.
Click to expand...
Click to collapse
yes on stock rom everything run well.
this is the best way to get your partition back.
I tried bpaul 5.1.1 rom but internal storage and sd card still not detect

hitman-xda said:
Well, I think I can fix you!
USE below values while repartitioning and rest of the procedure is same.
For the FIRST CYLINDER : 42945
For LAST CYLINDER: 477120
Regards,
hitman-xda
Click to expand...
Click to collapse
Thanks for the help.
Successfully installed.
Very good work this. nAOSP 6.0 rom
Thank again!

adiawie said:
yes on stock rom everything run well.
this is the best way to get your partition back.
I tried bpaul 5.1.1 rom but internal storage and sd card still not detect
Click to expand...
Click to collapse
Thats nice!
Internal storage and sd card not detected? Do you mean it does not show in any file explorer? Also stock ROM is installed and running successfully?
jamis66 said:
Thanks for the help.
Successfully installed.
Very good work this. nAOSP 6.0 rom
Thank again!
Click to expand...
Click to collapse
That's Good! Enjoy MarshMallow!

hitman-xda said:
Install Minimal ADB and Fatboot into your Windows PC.
Now Switch off your Phone (ACRO S) and
Connect Phone in Fastboot Mode (Power button + Connect USB to PC)
(If phone shows BLUE LED lighten, then everything is going right! IF NOT then Check for Fastboot drivers into your PC)
Now IN PC Open nAOSP.zip and Extract recovery.img to Minimal ADB and Fastboot folder.
(must be installed in c:/program files (x86)/minimal adb and fastboot/keep here)
Open Minimal ADB and Fastboot and type below commands;
~fastboot devices
~fastboot flash boot recovery.img
~fastboot reboot
(Now your phone will restart in TWRP recovery)
[/B]
Click to expand...
Click to collapse
Thankyou for this guide Hitman, I am excited to try this on my XAS! I am getting stuck in the early stages of the guide though. I have 2x Acro S running BPaul 5.1.1. I have installed minimal ADB but when I run it the command prompt does not have a '~' symbol. I have tried to connect both phones in fastboot mode by holding the volume up key or also the power key but neither seems to work. I can get a blue light for a few seconds then the phone proceeds to boot to Google logo and battery indicator. I have tried running the first command '~fastboot devices' on both phones but nothing happens, no error message, no attempt or otherwise, it just goes to a new line of the command prompt. I have installed flashtool adb drivers. I am running Windows 10.
Do you have any idea what may be going wrong here?
Thanks!

glenb83 said:
Thankyou for this guide Hitman, I am excited to try this on my XAS! I am getting stuck in the early stages of the guide though. I have 2x Acro S running BPaul 5.1.1. I have installed minimal ADB but when I run it the command prompt does not have a '~' symbol. I have tried to connect both phones in fastboot mode by holding the volume up key or also the power key but neither seems to work. I can get a blue light for a few seconds then the phone proceeds to boot to Google logo and battery indicator. I have tried running the first command '~fastboot devices' on both phones but nothing happens, no error message, no attempt or otherwise, it just goes to a new line of the command prompt. I have installed flashtool adb drivers. I am running Windows 10.
Do you have any idea what may be going wrong here?
Thanks!
Click to expand...
Click to collapse
You don't have to write ' ~ ' symbol. That's not the part of the code.
Blue LED light for few seconds and phone boots! That's means you have to install fastboot drivers to your PC.
If some cases, try connecting USB to different ports of your PC.
You said you're using BPaul's 5.1.1
You should have know this. Still if you don't, check my below link for installing fastboot drivers;
http://forum.xda-developers.com/showpost.php?p=61045126&postcount=4

hitman-xda said:
You don't have to write ' ~ ' symbol. That's not the part of the code.
Blue LED light for few seconds and phone boots! That's means you have to install fastboot drivers to your PC.
If some cases, try connecting USB to different ports of your PC.
You said you're using BPaul's 5.1.1
You should have know this. Still if you don't, check my below link for installing fastboot drivers;
http://forum.xda-developers.com/showpost.php?p=61045126&postcount=4
Click to expand...
Click to collapse
Thanks,
I followed your guide but get the message "Google, Inc (WinUSB) - Install Failed" every time I try. If I look in device manager for the few seconds that the blue light is on I have a device under portable devices with an exclamation that says "S1Boot Fastboot".
It definitely seems to be a driver issue but I can't seem to get it resolved. I have tried pointing the driver directly but it says driver not found.
I will try from another computer in the next day or so.

hitman-xda said:
Thats nice!
Internal storage and sd card not detected? Do you mean it does not show in any file explorer? Also stock ROM is installed and running successfully?
That's Good! Enjoy MarshMallow!
Click to expand...
Click to collapse
now im enjoying MarshMallow.. thanks @mickybart and @hitman-xda

glenb83 said:
Thanks,
I followed your guide but get the message "Google, Inc (WinUSB) - Install Failed" every time I try. If I look in device manager for the few seconds that the blue light is on I have a device under portable devices with an exclamation that says "S1Boot Fastboot".
It definitely seems to be a driver issue but I can't seem to get it resolved. I have tried pointing the driver directly but it says driver not found.
I will try from another computer in the next day or so.
Click to expand...
Click to collapse
Better do it on windows 7/8.
Win10 is crap!

hitman-xda said:
Better do it on windows 7/8.
Win10 is crap!
Click to expand...
Click to collapse
it works for me in win10

@hitman-xda this rom running well on my acro but when connecting to pc internal storage & sd card not detect.

adiawie said:
@hitman-xda this rom running well on my acro but when connecting to pc internal storage & sd card not detect.
Click to expand...
Click to collapse
When you connect your phone to PC, at that time unlock your phone and drop down notification drawer and click on "USB for Charging" then click on "File Transfers".

hitman-xda said:
When you connect your phone to PC, at that time unlock your phone and drop down notification drawer and click on "USB for Charging" then click on "File Transfers".
Click to expand...
Click to collapse
many thanks to u... perfecto

hitman-xda said:
NOW ACTUAL REPARTITIONING STARTS:
In TWRP GoTo Mount -> uncheck everything (system,data,cache etc)
In PC in Minimal ADB and fastboot type below;
~adb shell
~fdisk-l /dev/block/mmcblk0
Now You'll see some information-table, just copy everything and keep safe. It'll help you.
NOW CONCENTRATE ON LAST TWO ROWS IN THAT INFO-TABLE
/dev/block/mmcblk0p14 49247 261695 7000024 83 Linux
/dev/block/mmcblk0p15 261696 954240 22161424 83 Linux
(Values for your phone may differ)
NOW type below command; (make sure VALUES IN SAME COLOR MATCHES ACCORDING TO YOURS)
fdisk /dev/block/mmcblk0
Command (m for help): p
Command (m for help): d
Partition number (1-15): 15
Command (m for help): d
Partition number (1-15): 14
Command (m for help): n
First Cylender (769-954240, default 769): 49247
Last cylinder or +size or +sizeM or +sizeK (49247-954240, default 954240): 954240
Command (m for help): t
Partition number (1-14): 14
Hex code (type L to list codes): 83
Command (m for help): w
The partition table has been altered.
Calling ioctl() to re-read partition table
YOU'll SEE A ERROR, JUST IGNORE IT
Once partition is Done. Just reboot device. JUST REBOOT!
DONE!
Click to expand...
Click to collapse
Hi Hitman,
I tried on an older Vista machine and I was able to boot to fastboot mode and install recovery, so that is progress! I have come across another problem now though... I have followed the guide and gone to recovery and unticked all mounted partitions, then when I type "adb shell" on the PC with the phone connected I get the error:
"error: device 'null' not found"
Have I missed something here?