[Q] Repeated Failure of micro SD Cards - EVO 4G Q&A, Help & Troubleshooting

Is anybody else experiencing repeated failure of micro SD cards? EVO has been rooted and working great since last year. Suddenly, in February, my 32GB sd card failed on a reboot from flashing an early CM7 ROM. The Message is "SD Card blank or has unsupported filesystem." I called Sandisk and they sent out a replacement. Two weeks ago, same failure. Called Sandisk again and they are reluctantly sending another card (supposed to arrive today). In the meantime I was running with my 8GB that came with the phone. I just installed the stable CM7 release, restored data via clockwork and BOOM! SD card failure again. So, is anyone else getting this? Three SD cards in 2 months is kind of extreme. I'm trying to determine if it's the hardware, the ROM, or a series of bad cards (unlikely).
Some additional details:
All cards are Sanddisk
Recovery is ClockworkMod 3.0.0.5
HBOOT is 0.93.0000
Card is not readable via a card reader

its a bug with CM7

Thanks. I searched the forums, but was unable to find anything. Do you have a link to a discussion about it? Thanks.

sorry i dont have a link, it was some thing i read. a simple reboot was the suggestion and it worked for me also. good luck to you

buddhist said:
Is anybody else experiencing repeated failure of micro SD cards? EVO has been rooted and working great since last year. Suddenly, in February, my 32GB sd card failed on a reboot from flashing an early CM7 ROM. The Message is "SD Card blank or has unsupported filesystem." I called Sandisk and they sent out a replacement. Two weeks ago, same failure. Called Sandisk again and they are reluctantly sending another card (supposed to arrive today). In the meantime I was running with my 8GB that came with the phone. I just installed the stable CM7 release, restored data via clockwork and BOOM! SD card failure again. So, is anyone else getting this? Three SD cards in 2 months is kind of extreme. I'm trying to determine if it's the hardware, the ROM, or a series of bad cards (unlikely).
Some additional details:
All cards are Sanddisk
Recovery is ClockworkMod 3.0.0.5
HBOOT is 0.93.0000
Card is not readable via a card reader
Click to expand...
Click to collapse
I have had a similar problem with my 32 gb card.
Patriot card, Amon Ra 2.3, hboot 0.76, card worked in my laptop, and now is recognized in my phone, but Titanium backup will not recognize any app data elements

Delete the LOST.DIR on the sdcard while in recovery. Tends to fix it.

I posted this in one of the accessory threads, but it probably belongs in here.
------------------
I got a lexar 32gb class 10 microsd about a bit over a month ago. The first one worked great for about 3-4 weeks, then I started getting data corruption. Reformatted, copied data back, lasted 3 days. Now mind you, I always shut the phone down properly.
Rma'd it, got the replacement. Lasted all of 2 days before file corruption began again.
Lexar insisted I send my old one back before the send a replacement out. Fine. This ordeal took nearly 10 calendar days. During this time I had the stock sandisk 8gb class4 card. The data copied to the lexar is identical to that which was on the sandisk. Only difference is, I had no corruption what so ever with the sandisk.
Thus far, the conclusion i've drawn is that these bigger cards (or faster?) don't seem to work well as a virtual hard drive. They may be fine for storing pics or mp3s. However, the evo uses the sd card more so as random access read/write type storage, with the card constantly being updated by receipt of email, and other system programs/processes. Maybe this is what does the card in.

finally someone with the same problem as me...i thought i was the only one my 32gb card does the same was there a fix for it??

My 16GB Transcend card just died a couple of days ago. Sending it in today for replacement. I can access most folders from a USB card reader, but the larger folders can't be accessed.

wrxlvr said:
My 16GB Transcend card just died a couple of days ago. Sending it in today for replacement. I can access most folders from a USB card reader, but the larger folders can't be accessed.
Click to expand...
Click to collapse
i've been flashing every other cm7 nightly since the beginning wiping every 3 or 4th nightly... same 8gb SD card.. no issues.....

gpz1100 said:
However, the evo uses the sd card more so as random access read/write type storage, with the card constantly being updated by receipt of email, and other system programs/processes. Maybe this is what does the card in.
Click to expand...
Click to collapse
This is actually very interesting. Earlier this morning I was thinking about App2SD and started looking into using it, and saw comments that peoples cards were getting nuked after using it (albeit only a few people). This kind of jives with the above quote... but take that sentiment with a grain of salt, admittedly I'm still an Android noob.
To those who are experiencing corrupted card issues, are you using App2SD?

Wrathx, I am set up with an ext3 partition using the dark tremor's a2sd scripts. I only have the apks on there however. The rest of the /data content (config files, databases, etc) is still on the phone's internal memory - for the same reasons above. I figured the internal memory is better (faster?) equipped to handle ever changing content. So in essence, once the apk is on the ext3 partition, it's accessed as a read only process.
My 8gb stock sandisk card is partitioned identically to the way the 32GB was, 32mb swap, 512 mb ext, and the remainder as /sdcard. It's also being used in the same way (only apps moved to it, no other content). Again, no issues what so ever with it.
Now, the the cache and dalvik cache are both set up to use the phone's internal /cache partition (for reasons above). I mention this because dt a2sd script gives you a number of options on how to set this up. Some people may have their cache and/or DC on the ext partition in addition to possibly having the actual /data content including settings on there as well.

so is there a fix r is everyone running into the problem getting a replacement???

When my SD card failed I took it out and put it in my husbands phone ( LG optimus) and let it power all the way on then took it out and put it back in my evo and it worked perfectly after that. It's a 32 gb sands....hope this helps
Sent from my PC36100 using XDA Premium App

Just blew up card number 4. This one was a brand new SanDisk 32 GB. It failed when I powered up the phone. Just as a precaution I did not do anything out of the ordinary other than put some music on the phone. Did not transfer apps to SD. I'm going to restore to stock today and exchange the phone as a precaution. Since there is no clear evidence of the cause (even though it only started happening since switching to CM6/CM7) I may just go with straight stock root for now. I'll update if that causes any failures. I seems to only take a couple of weeks to get a failure so stay tuned.

popper668 said:
sorry i dont have a link, it was some thing i read. a simple reboot was the suggestion and it worked for me also. good luck to you
Click to expand...
Click to collapse
has this worked for anyone? Once i reboot i just get 'blank sdcard.' this is the 3rd card that got hosed for me. all 16gigs. really wondering if its the hc cards, cm7, or just my phone.

My repeated failures turned out to be a bad slot on the phone. I would unroot the phone, restore stock, and exchange it. Since getting a replacement I have had no issues.

Related

HTC Desire - SD card issues

from y'day.. sometimes i get the below message when i switch the phone
"phone could not able to backup data to SD card"...
The phone seems to lose access rights to the SD Card, so nothing is displayed in the file manager (estrong or Astor) The only way to fix this is to restart the phone.
in the phone settings-> SD scard option, I still have the option to unmount the SD card.. but then I don't know who to mount it back.. the only way i am able to fix it is by restarting the phone...
from y'day till now I got this problem for 3 times..
Anybody else having problems with this? please help..
Hi, I have the same issuses. It is very annoying, especially when taking photos. I tried reformat card, but it worked only for a week. I have got euro version, firmware 1.15.405.4. I hope HTC will solve this issue together with multitouch issues in next firmware.
I bought a 16Gb card and cannot get it to work in the Desire.
I've tested it in the PC, formatted it etc but it still won't work.
I'm not convinced where the fault lies, with the card or the Desire.
I had a problem once with sd+camera app, but after a reboot everything worked
funny enuff. that happened to me 2 yesterday ?
Sent from my HTC Desire using the XDA mobile application powered by Tapatalk
One of my 16GB cards also got corrupted. I found it did not slide into the SDHC card slot properly and did become dislodged. Check to see if the SD card is inerted correctly. My replacement 8GB seems fine.
ShugM said:
I bought a 16Gb card and cannot get it to work in the Desire.
I've tested it in the PC, formatted it etc but it still won't work.
I'm not convinced where the fault lies, with the card or the Desire.
Click to expand...
Click to collapse
I have 16 GB Kingston Class 2 in my Desire and no problem so far, quite cheap too.
I have had this a couple of times.
Install the SDMount Widget. Unmount the card in settings, click the widget, back in business.
I'm experiencing this issue about once a week... :/
NZtechfreak said:
I have had this a couple of times.
Install the SDMount Widget. Unmount the card in settings, click the widget, back in business.
Click to expand...
Click to collapse
This doesn't work. I have the same problem as described above. I just ordered a new 8gb SD Card. I hope it's an SD card problem and not something wrong with the phone
Thread with same discussion here if you wanna check it out.
I've also been having SD card issues since I got the phone but yesterday things got worse!
After the problem occured again, I thought I'd try removing and reinserting the SD card (despite having done this before). When I restarted the phone it came up with a this message on the notification bar:
Blank SD Card
SD card blank or has unsupported filesystem.
I've tried reformatting the card in the phone, with the phone attached to my comp via USB, and with the card in a card reader. None of this works; the computer just doesn't recognise the card.
I've just emailed HTC support with the problem. I'll report back when I get an answer.
Also 16GB issue
Since a few days I have issues with my 16GB card also. I tried to install Navigon on the card by copying files directly to the card. After inserting it into the phone two out of three directories were empty....
Trying to copy fromt the pc to the Desire using it as a disk drive gave me the blue screen of death
I tried to install it using the original 4GB card and everything works like a charm
I tested the 16GB card (forgot what tool, it was a 1 month trial without write testing) and the card came out fats enough and without any bad blocks.
I will do a write test this evening (EU time) to see if I can fit 16GB ont the card, but everything points to the phone at this moment
jamieyates79 said:
I've also been having SD card issues since I got the phone but yesterday things got worse!
After the problem occured again, I thought I'd try removing and reinserting the SD card (despite having done this before). When I restarted the phone it came up with a this message on the notification bar:
Blank SD Card
SD card blank or has unsupported filesystem.
I've tried reformatting the card in the phone, with the phone attached to my comp via USB, and with the card in a card reader. None of this works; the computer just doesn't recognise the card.
I've just emailed HTC support with the problem. I'll report back when I get an answer.
Click to expand...
Click to collapse
I've had exactly the same problem which I posted about in another thread. Do let us know if HTC get back to you
Same problem with my Desire and a Sandik 16 Gb Class 2...
The card works fine on my mp3 player, but it is not recognized by the phone. I'm going to contact HTC, too.
My Desire has complained twice now that my 16GB SD card is damaged and needs to be reformatted. But when I put it in my Nokia N97, it works fine. The last time I did a disk check in XP, and that took care of the problem for a while at least, but it seems strange that the problem appeared in the first place.
Having invested in a 16gb class 2 Kingston card for my desire I can tell you that it brings nothing but grief. I then purchased a 8gb class 6 pqi branded card and found it to be flawless in performance. One thing I noticed with the class 6 card is the very fast speed in copying to and from the card. Much faster than the Kingston class 2. On the class 6 card I have never had corruption of data or any problem. I see comments posted that the class makes no difference. In my experience it makes a huge difference.
you guys are having issues with your 8GB/16GB cards, i was considering getting a 32GB a few days from now, after reading all this i'm having second thoughts.. does size matter ? (pardon the pun)
I don't think the size of the card should matter, but then again - it just might. I was wondering if there's a slight possibility my card got corrupted from when I've had it connected to my computer in disk mode. I only use the "safe disconnection of hardware" button in XP, but I don't select to unmount it on the Desire - it shouldn't be a problem, but perhaps that's how it got broken. Or perhaps it's just damaged and glitchy
Make sure the MBR is formatted too. Windows does not do this by default. Search for a tool on the internet.

Desire killed my 8gb microsd! Help?

Been using this 8gb microsd for a over 2 months and never had a problem was always flashing different roms until last week while i was running sense 2.04 the card just suddenly stopped working completely!
no phone can read it! tried it on a few nokia phones and my htc magic with no luck!
tried the card reader to see if it needs format but the reader can't read it and the reader does work i tried it with other cards...
Does anyone or have an idea what I can do to get it working again? I just want to get my photos on it even if i somehow have to format i can always use a recovery software to get the files back but it's not getting recognized... probably a hardware issue? anyone with any help would be appreciated !
Had the same problem, managed to copy stuff off onto pc but cannot re-format the card.
It says it is locked.
Not really the same thing... I can't even copy my files because it doesn't get detected at all! and now just tried a different card reader so again it doesn't seem to be the reader that the issue... could it be truly dead?
I've had that happen on my G1.
Grab an Ubuntu live disk, boot from it and then plug in your memory card reader with your microsd. It should read it and then you can copy your files over to your HDD. It shouldnt be too hard. If you have an ext partition it will also read that and you can copy the contents over to your hdd. Then using Gparted, you can repartition your sd card and then copy your stuff back over.
this happened to me about 6 weeks back - Desire and WinXP would not mount the card at all, manged to mount it through ubuntu but only got a couple of files (photos) back off the card. Back to the 4Gb as supplied sd just now
Hmm just tried ubuntu guys and didn't seem to get any luck... any other ideas? thx.
k4r1m said:
Been using this 8gb microsd for a over 2 months and never had a problem was always flashing different roms until last week while i was running sense 2.04 the card just suddenly stopped working completely!
no phone can read it! tried it on a few nokia phones and my htc magic with no luck!
tried the card reader to see if it needs format but the reader can't read it and the reader does work i tried it with other cards...
Does anyone or have an idea what I can do to get it working again? I just want to get my photos on it even if i somehow have to format i can always use a recovery software to get the files back but it's not getting recognized... probably a hardware issue? anyone with any help would be appreciated !
Click to expand...
Click to collapse
I got same problem with froyo, my card is dead. I tried with all methods but no luck.
Yea i thought i would just post that my desire has also killed my 8gb class 2 memory card, no computer will properly recognize it. Cannot format it or anything.
If i brought a 16gb class 6 do you think the phone will kill that as well, just dont wana waste $80.
When this happened to my 4GB card. I booted the phone into recovery mode. Selected 'MS-USB-Toggle' and the PC then picked it up. Was able to copy photos off the card and reformat it.
Give that a try?
If you still don't come right, I think it is safe to say the card is dead. May have just been a faulty card, rather than the phone killing it. (Don't see how that would even be possible, anyway)
put your micro sd in a sd-card adaptor and format via digital-camera.
camera can format killed cards.
stupsi
stupsi99 said:
put your micro sd in a sd-card adaptor and format via digital-camera.
camera can format killed cards.
stupsi
Click to expand...
Click to collapse
Hmmm, not so sure about that. Normally a dead card is a dead card. End of.
However give it a try - will be surprised if it works.
To add another phone to the list: my old HTC Hero toasted my 16GB SDHC.
Yep when I got my first desire it cooked a 16Gb Sandisk card... worked fine for almost 18 months in my Touch HD... less than a week in the Desire... toast!
Me too.
My Desire seems to have fried my 16Gb Sandisk card, although I'm still trying to work out if it's a genuine card as it looks different to my other sandisk cards but the seller assures me it's real. Lost my holiday photos!!!
Just bought another 16Gb card, will see how that goes.
Going to email HTC and see what they say.
stupsi99 said:
put your micro sd in a sd-card adaptor and format via digital-camera.
camera can format killed cards.
stupsi
Click to expand...
Click to collapse
I second that, they do particularly well
You can also try a low level format tool
I have used this one before - oldie but goodie - http://hddguru.com/software/2006.04.12-HDD-Low-Level-Format-Tool/ but there are others
this has hapened to my lexar 16gb card.
Ihave a rooted desire; I went into the recovery menu, formatted the card to fat32 100%.
I then plugged it into my w7pc. did a low level format, dskchk-check and fix bad blocks.
then reformatted to ext: 512 and the rest fat32 in my device, been working ever since.
Dear Jason S*******,
Thank you for contacting us. In regards to corrupted SD card issue with your HTC Desire, I can help you with that. The issue you are having is not known for us. We may need to check your phone in repair centre if there is a software or hardware fault on it. If your phone is very new, you can ask to exchange your phone from your retailer within the 28 days. If it is older, please contact with our call center to book your device for a repair and get a reference number for the booking. Call center will arrange a Courier to pick up your phone. Repair process takes Maximum 10 -15 days. We will ask you Pick up address, Pick up day, serial number of your phone We need your active email address to send a confirmation email. United Kingdom +44-845-890-0079 Mon - Fri 8 am - 6:00 pm If you phone in warranty this is unknown until it has been seen by our selves and has checked to see what needs to be replaced and what cause of the fault. A quote would be emailed to you before all repairs are carried out. Warranty doesn’t cover any scratches or broken screen. I trust that this resolves your query. Please do not hesitate to contact us again if required.
just an update from my end... I have tried everything possible card is actually dead hardware wise nothing software wise can fix it, R.I.P. my sd card

SD card unexpectedly removed...

So I have searched for this error and no one seems to have an answer that fits my problem. I got an error after booting that stated SD card unexpectedly removed and gave me a triangle with an exclamation point in the center
the card works fine
it will mount up perfectly from recovery, i even pushed several roms to it and tried (cyanogen, RR, and SkyRaider) all three worked beautifully, but as soon as I boot up BAM "SD card unexpectedly removed" and I can't access anything
the computer reads it just fine so I am pretty sure there is nothing wrong with the card, also with it reading in recovery it seems there is nothing wrong with the phone
is this a problem with ROMs?
I could try to do a factory reset and see if that works... but its really annoying :\
any help?
I would try reformatting the card on your PC. The card may have a bad sector that the PC and Recovery ignore. The phone OS tends to be a little more picky about those sort of things.
bigslam123 said:
I would try reformatting the card on your PC. The card may have a bad sector that the PC and Recovery ignore. The phone OS tends to be a little more picky about those sort of things.
Click to expand...
Click to collapse
This worked
Thank you, I am running good now
I noticed when I was trying to backup my SD card (pictures and whatnot) that some of the files were corrupt
I will make sure I keep a regular backup just in case its a sign of the card going bad
good thing is my titanium backups were all perfect
eyeheartmozart said:
This worked
Thank you, I am running good now
I noticed when I was trying to backup my SD card (pictures and whatnot) that some of the files were corrupt
I will make sure I keep a regular backup just in case its a sign of the card going bad
good thing is my titanium backups were all perfect
Click to expand...
Click to collapse
You are on the right path - don't forget, a good practice is to back up your SD card to your PC regularly.
Why? If (when really) the SD goes wonky, you have a PC backup of the card, and you can get another SD, format it on the PC, load the backups you made, and be back in business in short order.
smtom said:
You are on the right path - don't forget, a good practice is to back up your SD card to your PC regularly.
Why? If (when really) the SD goes wonky, you have a PC backup of the card, and you can get another SD, format it on the PC, load the backups you made, and be back in business in short order.
Click to expand...
Click to collapse
yeah, fortunately I had done this about a month ago
I lost a few pictures that I took recently but overall it wasnt a big loss
I will def be doing this more frequently
Same problem with a twist
I receive the same error only i can't get anything to read the card after it happens. Any help would be appreciated.
Gilead said:
I receive the same error only i can't get anything to read the card after it happens. Any help would be appreciated.
Click to expand...
Click to collapse
My solution was to format and start over, that was the only thing that worked for me
I've gotten this a few times and it is a PITA because it resets all the notification sounds and also the phone reboots. Once it does it, the only way I can get it to work is to remove the card, put it in the PC, let Win7 do a fix and repair errors and then it will work. I tried removing and reinserting, and it would mount the card and immediately give me the 'sd card unexpectedly removed' message.
I tried reformatting, and the sd card worked for a while and then I got the 'unexpectedly removed" message again after a few days. The last time it gave me that message, I just did the repair errors thing again and it's been working without fail for about 4 days now. It seems like it's going to be an ongoing thing though.
I've been googling like a mad person trying to find a real fix for this. I saw a thread on Android central where they guy said he put his wife's card in his phone and it did the same thing; but worked fine in hers. He mentioned it might be related to the 2.2 OTA update. My problem did start after that update.
In another forum thread, someone posted that they bought a new card, and it gave them the same message. So it doesn't appear to be a bad card; which is what I originally thought. I'd hate to buy a new one and have same issue (i have a 16gb card currently).
(sorry for long post)
I have the same problem! I'm using a Verizon HTC Droid Incredible 2. Previously i've been running Froyo 2.2 over the phone with a 16 GB microSD Card without problem. Later i've been using a 2 GB microSD Card and works fine, but now i'm runnin' Gingerbread ROM From verizon with 16 GB microSD Card and the messages "SD Card unexpectedly removed" don't stop.... the card works fine over other phones... even the stereo of my car can read perfectly the card's content.
I don't know if this is a problem with the update or what????
I don't think in the versions of "Bad sectors" because i check everthing and the problem persist.
The problem appears when i'm playing music... later of that the problem appears at the camera, the file explorer or another app that tries to read the SD Card.
I reboot the phone and works fine but after a couple of minutes the same [email protected]$%&t appears again....
I'm tired of reading forums telling me that is a problem with the sectors... that is a LIE!
no matters the class of the card because i've tried with Class 2, Class 4 and works fine.
This night i'll go to the store that solds me that coursed card to change it!
if tomorrow my problem was solved i been writing at this same forum!
daniel_irias said:
I'm tired of reading forums telling me that is a problem with the sectors... that is a LIE!
Click to expand...
Click to collapse
I do not think someone saying it is bad sectors means they are lying.
I think they are merely trying to help you determine what the problem could possibly be.
Sent from my Incredible Sensation 3D using Tapatalk
daniel_irias said:
I have the same problem! I'm using a Verizon HTC Droid Incredible 2. Previously i've been running Froyo 2.2 over the phone with a 16 GB microSD Card without problem. Later i've been using a 2 GB microSD Card and works fine, but now i'm runnin' Gingerbread ROM From verizon with 16 GB microSD Card and the messages "SD Card unexpectedly removed" don't stop.... the card works fine over other phones... even the stereo of my car can read perfectly the card's content.
I don't know if this is a problem with the update or what????
I don't think in the versions of "Bad sectors" because i check everthing and the problem persist.
The problem appears when i'm playing music... later of that the problem appears at the camera, the file explorer or another app that tries to read the SD Card.
I reboot the phone and works fine but after a couple of minutes the same [email protected]$%&t appears again....
I'm tired of reading forums telling me that is a problem with the sectors... that is a LIE!
no matters the class of the card because i've tried with Class 2, Class 4 and works fine.
This night i'll go to the store that solds me that coursed card to change it!
if tomorrow my problem was solved i been writing at this same forum!
Click to expand...
Click to collapse
did you format the card and try again as suggested earlier? That usually clears up any issues with sd cards unless they're fubar'd. Just make sure you back your card up first.
Whenever my card does this I put it into my Windows computer, right click on the card and go to properties/tools/error checking/ and check both boxes and let it run. It fixes my issues every time without formatting the card.
I had that problem a while back with one of Verizon's updates after 2.2. Reformatted card. worked fine in other phones but still said same thing everytine I put it back in the dinc. Ended up getting a new SD card then all was fine.
Sent from my ADR6400L using xda premium
If you have an ext extension on your sd use G-Parted (google it) to format your ext2/3/4 partition.

upgrading micro sd card

Hey guys I just wanted to ask u all a question bout upgrading sd cards on the Evo. I just purchased a Lexar 32gb class 10 sd card from Amazon. I still hav the stock 8gb card that has all my data....music,movies,music videos,custom roms,kernals amd so on. I hav heard that some people are having problems with changing their cards. So my question is what is the proper procedure to getting this transfer to be successful. Is it better to format new card thru windows or phone? Do I need to partition the new card? What is the easiest procedure to transfer my 8GB card stuff to my new 32gb card. The reason Im asking is I dont want to corrupt the new card in anyway...as u all kno they are NOT CHEAP!!! I just want the transition to workout smoothly with NO problems. Any advice wud b much appreciated. Thanks Yall!!! Evo runnin MikFroyo v4.61 w/ netarchy-toastmod-4.3.4-cfs-havs-more-nososbc...overclocked to 1152mhz.
Copy the contents of your current card onto your computer or an external drive. Shutdown your device. Remove your current card and replace it with your new card. Make sure your device supports the 32 GB size. Reboot your device. Many cards already come formatted, however, it wont hurt to reformat it to be sure. When your phone finish booting up, go to the SD card and phone storage setting within the menu. Select unmount SD card. After it unmounts, the option to format it will appear. Select format. When finished, select mount. Back out of that menu back to your homescreen. Connect your device via USB to your computer or external drive and transfer the items you copied to your newly formatted card. Reboot your device when you're finished. You can also format from your computer and from within recovery. Take your pick.
posting & replying via the XDA Premium app.
If am not wrong EVO supports max 16 GB and EVO Shift is 32 GB
^You're mistaken, the EVO does support the 32gb.
Says so on the HTC support page for EVO
Whew, you had me scared for a moment... I just ordered the same 32 gb microSD this morning. :]
I've been through 2 lexar 32gb cards. Within a matter of weeks to days, I was getting data corruption. Not sure if it's limited to the lexar class 10 cards, or any class 10. It would appear to function fine at first. At some point during the day i'd go to check my email and get a sd card mounted in read only mode message on the status bar. Rebooting would usually not help. Had to hook up the phone to the pc, mount the sd in recovery, then run a chkdsk. I'd typically get many many corrupted files.
Now mind you, i'm always careful to shutdown properly, only mount the sd when recovery. I've come to the conclusion that there is some incompatibility issue either due to the size, or perhaps lexar's ability to be downward compatible with the slower speed devices (I think the evo can only take advantage of up to class 6 devices).
Lets hope you have better luck than I did, but after multiple corrupted files, I'm back with the stock card, which has caused no issues at all (besides being low on space).
i have 32g patriot class 10 card and it works great for me. i just transfered my old sd card stuff onto my computer via the card adapter it came with. i inserted and formatted my new card into my phone. and transfered everything from my computer tomy phone via usb.
Ditto on the formatting with the phone. Since i am using ext, it had to be via the phone as I don't have the right tools to do it in windows.
FWIW, with the initial lexar card, there were no problems for nearly 3 weeks. With the replacement card they sent me, issues started showing up 2 days later. Could be my phone is less tolerant of media quality than others..
one thing you need to remember when copying the files, is to hit the option to see the the hidden files on your sd card, if you dont your phone will have glitches because it will be missing those files, because when they are hidden they dont get copied
Hate to hijack here but it's along the same lines.
If I don't listen to music or take a bunch of pictures what if any difference will I notice upgrading my class? Sorry I am coming from a Vibrant that had 14gigs internal and the sc card was purely optional.
I was thinking about just getting an 8 gig class 10 if it would make a difference.
pc to dupe sd card?
Could you just copy the sd card using an adaptor to your pc hard drive, then copy the files onto the larger sd card, again using the adapter in the pc. then install the new sd card into the phone? I am new, to this, i'm just askin.
blairan...I think you wud b safe to do that but u must format the new sd card first via phone(itself) or thru windows before any transfer of data is made. My question was simply that I hav read that many people hav had complaints bout corrupted files being present thru their new cards. Or problems with "read only" errors and not being able to access things on the card. If u are rooted and are running a custom ROM that allows Apps2sd to help free up internal memory on ur phone then u wud also need to partition the card as well to allow that. I just dont understand why their have been so many people having these problems with the 32g class 10 cards.
blairan...Im pretty sure u wud be safe to do that but if it is a new card u must make sure it is formatted first via phone itself or windows before u transfer anything to it. My question was simply I dont understand why so many people have complained bout corrupted files and or read-only errors on the 32g class 10 cards. Problems that seem to arise days or weeks later after installing new cards. I wud really like to get to the bottom of it and find out why.
blizzard1017 said:
Hate to hijack here but it's along the same lines.
If I don't listen to music or take a bunch of pictures what if any difference will I notice upgrading my class? Sorry I am coming from a Vibrant that had 14gigs internal and the sc card was purely optional.
I was thinking about just getting an 8 gig class 10 if it would make a difference.
Click to expand...
Click to collapse
If anything, you'd probably notice quicker loading from apps that you've moved to the SD card. But admittedly, video, music, and photos are the places you'd see the most tangible improvement.
Doug,
I've tried this several times (I think I'm up to double digits, now) on my rooted Evo running the stock ROM. After I transfer all the files and reboot, several apps are not installed and the phone says it has a low amount of space. I've tried restoring a Clockwork Mod backup as well and I get the same thing. I have everything backed up in Astro, but when I try to install the missing apps, the low memory issue prevents them from being installed. Should I remove all my apps and start over? Should I un-root my phone and do a factory reset? I'm so frustrated I'm about to do the latter.
I'm upgrading to a 32GB class 10 card and I just can't figure it out. Any thoughts?
jmattix said:
Doug,
I've tried this several times (I think I'm up to double digits, now) on my rooted Evo running the stock ROM. After I transfer all the files and reboot, several apps are not installed and the phone says it has a low amount of space. I've tried restoring a Clockwork Mod backup as well and I get the same thing. I have everything backed up in Astro, but when I try to install the missing apps, the low memory issue prevents them from being installed. Should I remove all my apps and start over? Should I un-root my phone and do a factory reset? I'm so frustrated I'm about to do the latter.
I'm upgrading to a 32GB class 10 card and I just can't figure it out. Any thoughts?
Click to expand...
Click to collapse
No, you do not need to unroot, but I do recommend you start from scratch. Since you already have the contents of your card backed up to your computer, go into recovery and re-partition and re-format your card. In amon_RA select "partition SD card" from the main menu. You will be prompted to set a size for 3 different things. Insert a zero each time. Doing so will allow you access to your entire card. Afterwards, copy the rom you want to use to the card via the MS-USB or the Mount USB option, if using ClockworkMod and flash it. Your paid apps will be listed in the Market after you've logged in with your credentials. Your unpaid apps will have to be redownloaded and reinstalled unless you have them backed up to Google's servers or backed up with Titanium Backup. Anyway, you will have a clean install of your rom, a clean install of your apps and a freshly formatted and partitioned SD card. If you still get the low memory error afterwards then I am assuming you have too many apps on your internal memory and thus, you will need to move many of them to your SD card to free up your internal memory. There are tutorials available to learn apps2sd. Anyway, I hope this helps you.
posting & replying via the XDA Premium app.
Thanks so much. I'll give it a try.
jmattix said:
Thanks so much. I'll give it a try.
Click to expand...
Click to collapse
You're very welcome. Enjoy the rest of your holiday...
posting & replying via the XDA Premium app.

S4 Won't read Sd card

I am stumped! I got a Sandisk 64gb sd card for this. Naturally, it came formatted as exfat. From stock through 3 different CM based ROMs, I can't get this S4 to read the SD card. I even downloaded a partition manager to format it to Fat32. I also wiped it and let the phone format it. Even after that it would read it. I know CM now supports exFat format. I even flashed separately the script from the original thread. In any case my laptop has no problem with the sd card. Any help appreciated.
I have a Patriot 32 gb class 10 that was working fine until s couple of days ago. Then the phone said sd card unexpectedly removed. Pulled battery and card nothing. Did a format still nothing put that card in my Asus transformer tablet. read just fine took the card thatvi had in my tablet without formatting it put it in my s4 and it read it. this is my 4th galaxy device they should have figured this out by now. Any suggestions.
Sent from my SGH-M919 using xda premium
same happened with my 32gb on my note2 and now in my gs4
tapatalk on android
The sudden unmounting and/or sd card not being recognized by the S4 and other devices as mentioned is a known issue that is usually SD card related. Sometimes it's just a matter of reformatting your card to Fat32 if your ROM cannot read exFAT cards.
But if that's not your issue or you already reformatted your card to the appropriate format, the SD card has failed and warranty/replacement is suggested.
Can happen to SanDisk cards in addition to other manufacturers.
You may hear this issue being associated to SanDisk cards if only because they are probably the most counterfeited card out in the market. But the issue can occur to non counterfeit cards also.
To reduce your chances of having theses issues happen, always get your cards from reputable sources, in blister original packaging, etc. And if the price looks too good to be true, it most likely is. Even if you take the above precautions, you can still have issues.
Always back up your data for that 'Just in case moment' in case stuff happens.
Purchasing a card whose Manufacturer and/or Seller has an excellent return/exchange policy is a plus.
Having a spare SD card available can help you troubleshoot what your issue may be regarding a defective card, formatting issue, device issue, etc.
You may want to take a look at this thread, as it may help you out:
http://forum.xda-developers.com/showthread.php?t=2041679
I started to reply to you but my laptop crashed. Seems this s4 just doesn't like that 64gb sandisk. I had an 8gb card laying around and that worked like a charm. The sandisk was foramted exfat out of the box. I formated fat32 and didn't work. I wiped it and left it without format. Put in the phone to let it format the card. It did--fat32 and then still wouldn't read it or even mount it.
I sure don't have anything to lose by trying a different program to format that card. It could come in handy even if I don't use it in the phone. A camera comes to mind.
Oh yeah, it was easeUS that I used to format the card in the first place. Try something else.
Sent from my SGH-M919 using xda app-developers app
Bowmanspeer said:
I started to reply to you but my laptop crashed. Seems this s4 just doesn't like that 64gb sandisk. I had an 8gb card laying around and that worked like a charm. The sandisk was foramted exfat out of the box. I formated fat32 and didn't work. I wiped it and left it without format. Put in the phone to let it format the card. It did--fat32 and then still wouldn't read it or even mount it.
I sure don't have anything to lose by trying a different program to format that card. It could come in handy even if I don't use it in the phone. A camera comes to mind.
Oh yeah, it was easeUS that I used to format the card in the first place. Try something else.
Sent from my SGH-M919 using xda app-developers app
Click to expand...
Click to collapse
Hmmm...
There have been issues with the 64gb SanDisk cards being read by the S4 as well as other devices as described in my previous post, the Ultra cards from what I've read (red & grey) I have the save card, class 10, running without issue on my previous S3 and current S4.
You may want to try the format link above.
You can always purchase another 64GB card on Amazon with a Seller with many, excellent reviews, and go from there, and return what you have to return
Right. That's the very card I have. Thanks for the help.
Sent from my SGH-M919 using xda app-developers app
Bowmanspeer said:
Right. That's the very card I have. Thanks for the help.
Sent from my SGH-M919 using xda app-developers app
Click to expand...
Click to collapse
Anytime.
Let me know how it goes
This happen to me but with my galaxy s3...turned out sd card was corrupted. Good news was Patriot replaced it with a new one....
If the SD card didn't work in other devices I would seek to exchange it. There are other things I can use it in. I just ordered a 32 GB G skill on new egg. That should do it. The other thing I tried on this sandisk is partition it to 2 smaller ones less than 30 GB each formatted to fat32. Finally it recognized one of those partitions. When I get the other card I'll swap them.
Sent from my SGH-M919 using xda app-developers app
I had the same problem as you OP. I've also downloaded programs to change the format type and stuff, but nothing worked, but I fixed it in a weird way.
My 64gb card didn't work on my samsung. I used many programs to format the card to get it to work, but nothing. What fixed it was....
I took that card and placed it inside my old smartphone (LG G2X). Once placed inside, a pop-up promoted me saying my card was damaged and it will try to fix it. I've tried this on my samsung and it didn't fix it, but once I tried it on this old smartphone, the card for fixed and started to work on my samsung.
I don't know if this could help you, but that's how I fixed my problem.
Format the card to Fat32.
Sent from Spaceball One.
blackknightavalon said:
Format the card to Fat32.
Sent from Spaceball One.
Click to expand...
Click to collapse
I had tried that already when the device initially wouldn't read the sd card. When I partitioned the card in FAT32 then the device picked it up, but only one partition of 29GB.
Bowmanspeer said:
I had tried that already when the device initially wouldn't read the sd card. When I partitioned the card in FAT32 then the device picked it up, but only one partition of 29GB.
Click to expand...
Click to collapse
I don't know what your problem is, then. My 64GB Sandisk card works perfectly in my Galaxy 4.
I don't know what me problem is either. When I have the time I going to return to stock and start over. TWRP won't backup onto the SD card either. Wondering if its behaving this way because I rooted the phone before putting SD card in. Though I have done complete wipe (including internal memory) prior to installing current ROM.
Sent from my SGH-M919 using xda app-developers app
Galaxy S4
Bowmanspeer said:
I started to reply to you but my laptop crashed. Seems this s4 just doesn't like that 64gb sandisk. I had an 8gb card laying around and that worked like a charm. The sandisk was foramted exfat out of the box. I formated fat32 and didn't work. I wiped it and left it without format. Put in the phone to let it format the card. It did--fat32 and then still wouldn't read it or even mount it.
I sure don't have anything to lose by trying a different program to format that card. It could come in handy even if I don't use it in the phone. A camera comes to mind.
Oh yeah, it was easeUS that I used to format the card in the first place. Try something else.
Sent from my SGH-M919 using xda app-developers app
Click to expand...
Click to collapse
I have a SanDisk 64gb micro SD card in my S4, and had it ever since I got the phone about 1.5 years ago. now I am getting the issues you all are getting. I have NOT updated to a new firmware version. and I just backed up and reformatted the card. Very frustrating when all your apps disappear. come to find out they are all being stored on the SD card witch is now not responding... I will try a differect card. I wish they would just leave the phone a lot and stop doing so many updates.. they update one thing it screws up another. Ever since the first update my "Drive" app don't work, and they have no clue why.. not even Samsung knows...
oh well
Laurap6286
Laurap6286 said:
I have a SanDisk 64gb micro SD card in my S4, and had it ever since I got the phone about 1.5 years ago. now I am getting the issues you all are getting. I have NOT updated to a new firmware version. and I just backed up and reformatted the card. Very frustrating when all your apps disappear. come to find out they are all being stored on the SD card witch is now not responding... I will try a differect card. I wish they would just leave the phone a lot and stop doing so many updates.. they update one thing it screws up another. Ever since the first update my "Drive" app don't work, and they have no clue why.. not even Samsung knows...
oh well
Laurap6286
Click to expand...
Click to collapse
Just curious as to how you got an S4, 1.5 years ago? :cyclops:
Odd SD Card Response
I have recently upgraded from a ATT Samsung Express (Tracfone) moving my 32GB SD Card into the brand new Galaxy S4 I Knoxed up right out of the box just as a matter of principle. I saferooted the phone and installed TWRP which for some reason refuses to load after a few succesful tries and a backup of my system and restore thern reload of TWRP. My concern in this question (unless some knight in shining armour can make sense of my TWRP issue) is that I am not able to write to the samsung branded SD card I removed from the old phone. I cannot create a ROM directory on it when the phone is connected to the PC, nor can I copy files to it. I had hoped to preserve the photos on the card and suppose I can break down and buy an adapter so it will connect to my PC but the point is it "should" work,, no? I cannot create a directory when the phone is connected to the PC nor can I in ES file Explorer. I've also tried to create a directory in root witth ES and am getting the same error. I just want to get the silly balloons off m screen and get google play to run. I am succesfully rooted. I've tried to reload TWRP with Odin only to get the small print int he uper right hand of the screen then no further. I am able to restore my backups thank God.
This is making me batty on a three step process. The card is my main concern right now as I can't load the ROM to it once I get TWRP figured out. Thanks in advance for all the great help I always get. The better I get the more I'll contribute....I promise.
's
I'm having the same problem. We are not alone, there are numerous threads in the other S4 forums, like this one http://forum.xda-developers.com/showthread.php?t=2281813&page=14

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