Develop Bugs

SD Card Removed Unexpectedly when Connected to PC?

I've looked around a bit, and correct me if I'm wrong, but it doesn't seem like anyone else has my problem.
Long story short, I've got a 8GB Class 4 Sandisk SD card, and it worked well for the first few weeks. However, as of recently, anytime I connect to my PC in any way and try to transfer files over using USB or Bluetooth, it fails due to the unexpected removal of my SD Card. This is without me physically removing it of course.
I've tried formatting using default settings, and I don't know what else to try... can anyone shed some light here?

Have you tried another SD?
If you have and problem is still there, I would try a factory reset.
If after all this effort your problem is still not resolved, then i would say a call to HTC is your best solution as it could be hardware related.
Oh couple more things:
Try a different USB cable.
Try a different port or pc.

Okay, I tried it with the stock microSD 2gb, and I didn't get this problem ... basically it just means I've got a bad 8gb?

shiverxiii said:
Okay, I tried it with the stock microSD 2gb, and I didn't get this problem ... basically it just means I've got a bad 8gb?
Click to expand...
Click to collapse
Yup, it happens sometimes.
Sent from my HTC_A510c using Tapatalk

Be aware there has been countless reports of fake sandisk SD cards being sold everywhere including eBay and Amazon's market place.
So before purchasing a new card Google how to spot a fake sandisk and it should give you an idea of what to look for or not.

I had also faced this situation ...i changed with class 2...nw it working like charm...
Sent from my HTC Wildfire S using XDA App

I purchased mine from London Drugs, not sure if you know it, but it is a trustworthy place so I doubt my card is fake.
One more thing for clarification, do you think that setting the phone so that it auto installs to SD could have some effect? I set mine up like that due to the lack of internal storage. Thanks for the responses!

i didnt have this issues before hope u can fix it

shiverxiii said:
I purchased mine from London Drugs, not sure if you know it, but it is a trustworthy place so I doubt my card is fake.
One more thing for clarification, do you think that setting the phone so that it auto installs to SD could have some effect? I set mine up like that due to the lack of internal storage. Thanks for the responses!
Click to expand...
Click to collapse
Auto install to SD should have no effect mate.
Also the fake card situation - well they have been sold by legitimate sellers believing them to be genuine, not trying to deceive customers.
Apparently the market has been flooded with them.
I read about it a couple of months back.
Not saying yours is fake, was just saying your average user wouldn't notice at all.

Strange SD Card problem

I had a strange problem happen to my SD Card on my SG3. I have a Patriot 16GB class 10 card that I used on my EVO 4G for a almost 2 year without a problem. After when I got my new phone I clean all folders that I no longer needed except my pictures and some applications. Put the card in my SG3 and everything was OK. I was able to copy files take a pictures and everything seems to work the way it should. Last week I was on a trip and during the process to taking a picture I got a message that my card was removed and basically disappear. I reboot the phone and nothing happen. then a little bit later I saw another message that card was found and everything show up again. Then I check do I have all the pictures and most of them were there except on a last one was (when card disappear) basically it was look like that picture was taken a half way. So I delete that bad picture and continue. A day later it happen again but this time when card show up again instead a normal card I have that message in notification bar with a little sd card that it says Blank SD card. then if I pull down and click on it phone is asking me to format the card. I try to mount the card but got the same message Blank card or unsupported file system. Ok so I didn't have at that time my adapter to plug in to my laptop and wait until I got home to try to repair the card.
Here is what I got now and I'm not sure is phone damage the card or card slot on the phone is not good.
I use minitool under windows and GParted as well under linux. Both of them recognize my card as 60 GB Unallocated space (it is a 16GB). when I try to recreate or format both of them said successful but card is not show up. I have to plug it back and then it goes again as a 60GB unallocated space.
Does any one know how to format a 16GB card as FAT32? I mean the settings I have to use to put to get back again this card as a 16GB not as 60GB.
Sorry for the long explanation and thanks for you help in advance.
P.S. I' not rooted and on LG8 update.

Bro,did to trid any other sd?
sent from my htc

ventzi said:
I had a strange problem happen to my SD Card on my SG3. I have a Patriot 16GB class 10 card that I used on my EVO 4G for a almost 2 year without a problem. After when I got my new phone I clean all folders that I no longer needed except my pictures and some applications. Put the card in my SG3 and everything was OK. I was able to copy files take a pictures and everything seems to work the way it should. Last week I was on a trip and during the process to taking a picture I got a message that my card was removed and basically disappear. I reboot the phone and nothing happen. then a little bit later I saw another message that card was found and everything show up again. Then I check do I have all the pictures and most of them were there except on a last one was (when card disappear) basically it was look like that picture was taken a half way. So I delete that bad picture and continue. A day later it happen again but this time when card show up again instead a normal card I have that message in notification bar with a little sd card that it says Blank SD card. then if I pull down and click on it phone is asking me to format the card. I try to mount the card but got the same message Blank card or unsupported file system. Ok so I didn't have at that time my adapter to plug in to my laptop and wait until I got home to try to repair the card.
Here is what I got now and I'm not sure is phone damage the card or card slot on the phone is not good.
I use minitool under windows and GParted as well under linux. Both of them recognize my card as 60 GB Unallocated space (it is a 16GB). when I try to recreate or format both of them said successful but card is not show up. I have to plug it back and then it goes again as a 60GB unallocated space.
Does any one know how to format a 16GB card as FAT32? I mean the settings I have to use to put to get back again this card as a 16GB not as 60GB.
Sorry for the long explanation and thanks for you help in advance.
P.S. I' not rooted and on LG8 update.
Click to expand...
Click to collapse
Windows will format it just fine under Disk Management. The fact that its reading it as a 60GB... I'd bet on the card as bad. I have hours and hours trying to save thumb drives and SD cards. 97% of them had no hope. Sometimes the card reader can act up... but not likely, and the phone's kicking it out too. Try to stick with Kingston or SanDisk even if you have to pay a little more. Yes, Cards do go bad like that.

a454nova said:
Windows will format it just fine under Disk Management. The fact that its reading it as a 60GB... I'd bet on the card as bad. I have hours and hours trying to save thumb drives and SD cards. 97% of them had no hope. Sometimes the card reader can act up... but not likely, and the phone's kicking it out too. Try to stick with Kingston or SanDisk even if you have to pay a little more. Yes, Cards do go bad like that.
Click to expand...
Click to collapse
Thanks for the reply. It is look like that this card is going bad. It kind a surprise me since I didn't have any problems under my old phone. I will play a little bit more to try to repair it but....... looks like will be a lost a time.
Do you think that because it was a class 10 card causing a issue? I saw a couple treads but most of the SD card that people use are class 4.

ventzi said:
Thanks for the reply. It is look like that this card is going bad. It kind a surprise me since I didn't have any problems under my old phone. I will play a little bit more to try to repair it but....... looks like will be a lost a time.
Do you think that because it was a class 10 card causing a issue? I saw a couple treads but most of the SD card that people use are class 4.
Click to expand...
Click to collapse
I don't think the class would be an issue. How old is your card?

The Root said:
I don't think the class would be an issue. How old is your card?
Click to expand...
Click to collapse
Probably 1.5 year. I got my EVO 4G back in sept. 2010 and bought the card a couple months later when rooted my phone.

Yeah, like root said, the class wasn't the issue. The different phone might have pissed it off but you really never know. I never liked Patriot myself, but then some people like them. Gotta back stuff up or have it auto upload somewhere.

a454nova said:
Yeah, like root said, the class wasn't the issue. The different phone might have pissed it off but you really never know. I never liked Patriot myself, but then some people like them. Gotta back stuff up or have it auto upload somewhere.
Click to expand...
Click to collapse
I do have all the pictures auto uploaded to my DropBox account and all apps I backup on my PC. I just wondering if the card slot of the phone is bad. I have a new 4GB class 4 card. I will put in to the phone, format and try to see if it happen again.

last week suddenly received a message that the card was blank. did everything i could not to format it. finally gave in and tried formatting the sd card but couldn't. had to buy a new one. sounds like yours is going bad as well.

also try this thread as it has helped many
http://forum.xda-developers.com/showthread.php?t=1355528

a454nova said:
Yeah, like root said, the class wasn't the issue. The different phone might have pissed it off but you really never know. I never liked Patriot myself, but then some people like them. Gotta back stuff up or have it auto upload somewhere.
Click to expand...
Click to collapse
When I first got my SGS3 I used my old card from my OG Droid. I got an OTA update and my phone quit working (I got the "Unfortunately the process com.android.phone has stopped working" message). I took the phone back and they asked if I had ever had an SD card in it. I said "Yes, my old card from my Droid." I was told that this is a "known issue" with the SGS3 and that any SD card I used should be formatted in the phone itself. I'm not sure if this is the issue here, but it might be.

ventzi said:
I do have all the pictures auto uploaded to my DropBox account and all apps I backup on my PC. I just wondering if the card slot of the phone is bad. I have a new 4GB class 4 card. I will put in to the phone, format and try to see if it happen again.
Click to expand...
Click to collapse
I bet it will be fine. Only one why to know.
Sent from my SPH-L710 using Tapatalk 2

a454nova said:
I bet it will be fine. Only one why to know.
Sent from my SPH-L710 using Tapatalk 2
Click to expand...
Click to collapse
I hope so. Thanks for you help.
P.S. I did play with couple more tools but unfortunately no luck at all. It is time to look for a new one.

Is my phone killing my memory card(s)?

Ok so i had a 32gb card and it started failing on my phone, it would work sometimes or ask me to format it, sometimes it would work fine so i assumed it was about to die soon so i was able to back everything up,.
Bought a new 64gb sandisk card, the one suggested from the accessories list...well i've been using it for about a week now and it just died on me today.
doesn't even get detected...
i never formatted, it, read that this phone could support it right away...well now nothing works and i've lost everything....again!!!
this is really frustrating...i've lost some major saved games and it's depressing
could it be the phone...or was it just a bad card
i've used the original charger and battery at all times...
any clues?

krazyq said:
Ok so i had a 32gb card and it started failing on my phone, it would work sometimes or ask me to format it, sometimes it would work fine so i assumed it was about to die soon so i was able to back everything up,.
Bought a new 64gb sandisk card, the one suggested from the accessories list...well i've been using it for about a week now and it just died on me today.
doesn't even get detected...
i never formatted, it, read that this phone could support it right away...well now nothing works and i've lost everything....again!!!
this is really frustrating...i've lost some major saved games and it's depressing
could it be the phone...or was it just a bad card
i've used the original charger and battery at all times...
any clues?
Click to expand...
Click to collapse
Look for File Restore Plus software. it will retrieve all of your lost files in your micro SD card. this happened to me a few times but this software saved my butt!

I may be wrong here but I seem to remember some people having issues withe the 64gb cards. Search around and youll probably find something.
Also check www.sdcard.org for more info on the sdxc cards and a sd formating tool that may help.
Sent from my SGH-T999 using xda app-developers app

sd card suddenly removed ?

Hi guys, I just encountered this problem twice tonight. First, it said "the card is damaged" or something like that then all my photos disappeared (I managed to recover all of them using a recovery software). I formatted and check the card with command promt in windows. Everything was fixed then I put it back to the phone. After a while playing around with it, it said "sd card suddenly/unexpected removed" and again, photos disappeared. I've had this phone for 4 months and never had this problem before. no idea what was going on. I looked this up and it turns out many people used to have this issue with their S3. My card is 32Gb sandisk class 4. Any ideas? right now it's working fine but Im scared that it might corrupt again.

I'm not sure why you formatted it when you put it into your computer, unless it didn't give you an option but i had the same problem happen to me last week and what fixed my problem was I would have my phone's backcover off while tuning the phone on with the microsd card not inserted and after the phone fully boots up then insert your microSD card and it should fix the problem or it did for me atleast, give it a shot.

My s3 still recognized the card. The card was not dead, only the file were corrupted. I formatted it since I thought that would make it "new" again... I also checked bad sectors with windows. Right now it's working fine, I'm just afraid it might happen again and corrupt my photos.
Is class 4 too slow? I have a class 10 SanDisk 32gb but I figured testing it would be a waste of time since I had 4 straight months without problem with this class 4.

rookiegenius said:
My s3 still recognized the card. The card was not dead, only the file were corrupted. I formatted it since I thought that would make it "new" again... I also checked bad sectors with windows. Right now it's working fine, I'm just afraid it might happen again and corrupt my photos.
Is class 4 too slow? I have a class 10 SanDisk 32gb but I figured testing it would be a waste of time since I had 4 straight months without problem with this class 4.
Click to expand...
Click to collapse
When you first put the SD card into your phone months ago, did you format with the phone or the computer? It's always recommended that you format from the phone, before you use it; because it can cause weird bugs down the line. Also, are you running any customs roms or is this happening on stock?

Well I don't remember if I formatted it. I'm on rooted stock JB. I've had this card for 5 months and it has stayed in my s3 since august. There were a couple of times I took it out without un mounting (I didn't know there was an option to unmount it), but that was like months ago. I've done a little search and actually, this is a pretty common thing.

rookiegenius said:
Well I don't remember if I formatted it. I'm on rooted stock JB. I've had this card for 5 months and it has stayed in my s3 since august. There were a couple of times I took it out without un mounting (I didn't know there was an option to unmount it), but that was like months ago. I've done a little search and actually, this is a pretty common thing.
Click to expand...
Click to collapse
I had the same problem. It would let me view pictures and play mp3's fine, but when I tried playing a flac or video, I would get the same error. I reformatted with android and haven't had a problem since.

mattedwards2686 said:
I had the same problem. It would let me view pictures and play mp3's fine, but when I tried playing a flac or video, I would get the same error. I reformatted with android and haven't had a problem since.
Click to expand...
Click to collapse
It has worked fine since last night. I just reformatted it again by the phone. Hopefully this won't happen again.

Had the same issue with my S3.
Turned out that the SD card was dying (the card brand is Team Group), this caused it to be unmounted by itself and then mounted again (sometimes showing notification “sd card removed unexpectedly”), hence triggering the “Media” scanning process and significantly draining the battery.
I created an application to monitor how many times the SD card was removed, and turned out to be unmounted every ~3 mins!!!
I then bought a new Transcend 32GB Class 10 card (made in Korea), and until now, this never happens, no reports from the application whatsoever, and no media process eating my battery.
I just published this app in the play store now, this is the link:
https://play.google.com/store/apps/details?id=com.sdcardmonitor

I had the same problem with a 32gb SanDisk class 10. Files would corrupt, it would occasionally not mount correctly, and I'd frequently get the SD card is Damaged message.
For me, it seems like it was simply a faulty card, as I have an 8GB and 16GB card that both have worked without issue. I sent the 32gb into SanDisk for warranty replacement.
Sent from my SGH-T999 using Tapatalk 2

I had this problem for a while. Try formatting the card to fat32 and see if its fixed.

[Q] Problem with SD card

Hello to you all
First, I own this nice tablet s and bought a class 4 Kingston so card and didn't have much trouble until 4 days ago. Nearly every day since, the SD card stop working, and it needs to be formated in order to get it working again. I have copied several music a day videos and played them without any loss or error in them, but then from nowhere, it stops working.
Any ideas of how it can be fixed? I'm desperate cause I need to format it like once or twice everyday.
Thanks for reading.

I had a similar problem with my 32 Gig Sandisk Class 10 card, mine would just not read the card and would need a reboot to fix then it would be good for a few days and happen again. I have since replaced the 32 Gig card with a 64 Gig Samsung class 10 card, so far that card has not had any problems but I have only had it a week. I think the Tab S seems to be picky with certain cards. The 32 Gig card I have in a ASUS MeMo Pad 7 and it is working with no issues.

valkurchento said:
Hello to you all
First, I own this nice tablet s and bought a class 4 Kingston so card and didn't have much trouble until 4 days ago. Nearly every day since, the SD card stop working, and it needs to be formated in order to get it working again. I have copied several music a day videos and played them without any loss or error in them, but then from nowhere, it stops working.
Any ideas of how it can be fixed? I'm desperate cause I need to format it like once or twice everyday.
Thanks for reading.
Click to expand...
Click to collapse
depends on who/where you bought the sd card from. I have gotten knock off sd cards from ebay before that work like crap causing the issues you have described, so always buy from an official retailer. it may be that the sd card has gotten corrupted in a way that is not repairable as well

When it comes to sd cards (uSD) I have found using this to be the best tool for prepping/formatting and otherwise "fixing" cards. Now keep in mind, if a card is physically corrupted you're SOL but this utility has worked like a champ for me over the years.