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[Q] Problem with my Micro SD card

I just recently bought a Sandisk 32Gb class 10 microSD card. I got everything set up and I've been using it for a couple of days now.
Last night I just was using msn app on the phone then it just kinda kicked me off and I couldn't use the phone properly and it rebooted and said that the disk was either blank or it has files with different file allocation. ie fat 32 ntfs all that jazz.
I can not mount the card and i cannot format it again.
So scrounging around I found a SD card adapter for the computer and wacked that in the old port. It shows that it's there but it can not be opened.
I also can not view it's properties it just acts as if it's reading for ages.
Then it crashes explorer.
i tried opening it from command
it can't be opened but after opening the path for c becomes
c:\yujuju as if someone had typed it in.
i'm almost suspicious that it was a virus sent over the network through a program on my phone.
are there known viruses capable of making your micro sd cards unreadable?
if it's not a virus and it's just some kind of error on the micro sd card...
are there anyoptions for it? (has anyone made any recovery programs for SD cards you can download using forced mount methods or anything like that?)
I know i can send it back to the place of purchase but it means i have to pay for it to be sent to another state before they'll even look at it and if they don't think it's a manufacturer fault they'll charge me for it and the time spent trouble shooting. I'm a student and I can't really afford to do that

Just a quick note. I'm using cynogen 7.0.3 Desire
it is a HTC bravo. HBoot 6.93.1002
not sure if you'd need anymore detail than that..
please help :3

update// I just was looking around and I read about a website called recovery-filedotnet
and i downloaded the tool. When i try and scan the SD card the program crashes.
I used the demo version... I don't think this is going to end well. sigh.
Anyone with any knowledge that may help with out having to send it back to the company?

Hi,
Sorry, can't help you with recovering contents of your micro SD card. If you don't want to recover the SD card contents, have you tried formatting it on the PC (sorry, I couldn't tell from your posts whether you've tried that)?
There are also known to be many counterfeit micro SD cards out there. Basically, the counterfeit cards don't have the reported storage size, for example they may have 4GB instead of 32GB, so trying to write more than 4GB will result in data being overwritten (and probably trashing of file allocation tables).
I'm not saying yours is a counterfeit, but just something to be aware of.
You could check out h2testw which tests read/write performance, but also checks whether the SD card is the reported size (I think you'll need to format the SD card first, though).
Here's a link to a post I made using h2testsw on a micro SD card:
http://forum.xda-developers.com/showthread.php?t=1013030

Have you attempted to delete the partitions in disk management?
Sent from my GT-S5830 using XDA App

You cannot open the card on a computer. If you try and open the drive explorer actually crashes and you have to open explorer again using run
If you try and open the drive using command prompt. The drive refuses to open.
You can't access properties of the device either.
I bought it from scorptec. An australian computer company.
wwwdotscorptecdotcomdotau

I opened the Microsoft Management Console and opened storage and when the card is connected to the PC it goes in an endles loop of searching for drives.
This is all very strange if you ask me.

To make it perfectly clear. I can not mount or format from the device, from clockwork mod using ROM manager. I can not mount or format from a PC using the GUI or the command prompt. Using Microsoft Management Console fails.
The other weird thing is my computer was stuffed this morning. I couldn't view the details of my computers properties. The wireless keyboard couldn't be used.
The CPU and stuff was listed as unkown.
I did a system restore to an earlier date logged in to safe mode
Even though it's restored successfully it doesn't recognise that my anti virus is running. I had to enable things in msconfig and my remote access was ENABLED!
I don't know if this was related.
But I'm feeling rather depressed after all this.
I've run spyware and anti virus and nothings picked up. So EH today sucks.
But lets just focus on the SD card for now hey? ^-^

Just to be absolutely certain it's the card, go get ubuntu live cd or gparted live cd, boot from it and try and see if the card works there. Imo it's fubar but last post questions it slightly. If you cannot get any life out of it in gparted send it back.
Sent from my GT-S5830 using XDA App

take russ18uk's advice, if that doesn't work, you'll just have to giveup and reformat it.

russ18uk said:
Just to be absolutely certain it's the card, go get ubuntu live cd or gparted live cd, boot from it and try and see if the card works there. Imo it's fubar but last post questions it slightly. If you cannot get any life out of it in gparted send it back.
Sent from my GT-S5830 using XDA App
Click to expand...
Click to collapse
are they linux operating systems? Are you asking me to try and access the
device using a different? OS?
If so I'll wait till I'm in my programming class tomorrow and just boot the linux OS and see if it works.
Maybe ask my I.T teachers for assistance. But I think I knew I wasn't going to find a solution for this. I just can't afford to pay for postage costs at the moment. I've requested a returned warranty and I'll see what they ahve to say.
Sigh what a god awful day. @shakes tiny little micro SD card and yells [email protected]
(ironically I bought a Sandisk one beause they write the standards for MicroSD cards I believe haha, shot my self in the foot I wish I bought a kingston one now.)
@side note.. is this a picture of things to come? people come to me with computer problems and as a tech when i can't work things out i'll say ever cuss word under the sun in anger? lol i hope there's no customers around when i'm working XD maybe i should go get some anger management classes

Thanks to all who posted replies. Looks like I'll be sending the card back to the company I bought it from. poop!

Setting up fresh sdcard

Hello everyone...
I have recently switched from crackberry to android, about 6-8 weeks ago...
Since then I have perm-rooted + s-offed, flashed about 10 roms (sometimes the same ROM more than once) etc...
I have noticed that throughout this "learning how to screw things up" period, my sdcard has become nothing short of a train wreck...
I am going to transfer the files I want to keep over to my PC and format my card...
My question is:
Should I format my card via the PC or through the recovery console?
Additionally, should i reserve some space for swap or does android not utilize swap?
Also, should the card be just one large partition or should i break it down into a few different ones (system/personal/etc)?
Thank you all in advamce for your input!
Sent from my myTouch_4G_Slide using xda premium

KrnlPanic said:
Hello everyone...
I have recently switched from crackberry to android, about 6-8 weeks ago...
Since then I have perm-rooted + s-offed, flashed about 10 roms (sometimes the same ROM more than once) etc...
I have noticed that throughout this "learning how to screw things up" period, my sdcard has become nothing short of a train wreck...
I am going to transfer the files I want to keep over to my PC and format my card...
My question is:
Should I format my card via the PC or through the recovery console?
Additionally, should i reserve some space for swap or does android not utilize swap?
Also, should the card be just one large partition or should i break it down into a few different ones (system/personal/etc)?
Thank you all in advamce for your input!
Sent from my myTouch_4G_Slide using xda premium
Click to expand...
Click to collapse
As long as the main partition is FAT32 you can format it on an old Windows 95 computer.

Recommend formatting in the computer. A usb card reader is the best way, preferred would be one that only does MicroSD and not a multi- card reader.
One large partition is the right answer, don't try to get too creative, you'll end up outsmarting yourself.
At this time, I don't think there are any apps that need creative partitioning of the sdcard to run, so you should be good.
I also recommend that you see about picking up a class 10 MicroSD card, it will make a noticable difference in speed when accessing the card with the phone. (Playing a movie, game with sdcard files, etc...)
Make sure to always properly eject the MicroSD card from the computer before removing it, especially when you plug the phone into the computer. I've already permanently broken 2 MicroSD cards in the MT4GS by removing prematurely.
When flashing a ROM you will stay with for a while, what I like to do is insert the MicroSD card into the computer with a MicroSD reader, format the card, and put only the ROM install file on it.
Then I put it in my powered-off phone, boot to recovery, then flash the ROM.
This let's the ROM create all the files on the SDcard fresh, and helps keep you from having a mess all over the place.
I'm moving the contents of a storage unit today, and not the driver, so I'll check back here and there while we're on the road.
Hope this helps you get started, what operating system are you using on the computer? That may help to give you advice.
Sent from my Bulletproof_Doubleshot using xda premium

Wow as usual Blue6IX...
I am running windows 7, Server 2008 r2 and slackware.
Sent from my Bulletproof_Doubleshot using xda premium
*Thank you for the brilliant ROM Blue6IX

Okay, I haven't moved past windows XP, and i'm moving away from the windows line at this point. I've had some limited experience with win7, but i'm not too interested in investing the time to move forward in that direction.
Besides getting a dedicated MicroSD USB card reader (I have a handful of SanDisk ones) I'd also recommend getting an extra MicroSD card too.
Doesn't have to be big or fast, just a backup.
I carry my phone is a zipper-case that was for a camera. Still slim enough to fit in my pocket nicely, and keeps dirt and dust out of my phone.
It has an outside pocket, and I keep a spare MicroSD card that is freshly formatted, with only the zip for my ROM install and my most recent Clockworkmod backup on it.
I figure this way if something bad happens to my phone in the field, I have an un-corrupted clean "rescue disk" - a rescue MicroSD card.
I can (worst case scenario) power off the phone, put the clean MicroSD card in, then boot to Clockworkmod and either re-flash the ROM itself, or restore my most recent Clockworkmod backup.
(okay, I keep a few other backed-up files on it, like pictures and so forth, but it's an 8 gig card so I have the space)
Something else cool about this practice is it gets you familiar with cycling backups and maintaining a current one. You have to copy the backup to the card, forcing you to stop and deal with it - making you more used to backing up your data and making it a more intuitive process. You also end up with more then one copy of your backup
(usually 3 - one on the phone, one on the memory card, and one on a computer. Bonus points for burning a disk - and I always copy over to a flash drive too)
I'm big on backups, so it's only natural for me but doing something like this is good advice for everyone.

Thank you for the information, Blue... I currently have back ups on my sdcard, a stock Rom on my sdcard as well as my PC and my cloud storage (just in case)...
I think i'll wipe my card today...
Sent from my Bulletproof_Doubleshot
Thanks to the hard work of Roman & Blue6IX
using Tapatalk

Woohoo! Fresh sdcard... Only an 8gb but I am back to 5.6gb free...
The only other question I have, well 2 actually are:
When performing my nandroid back up I get the following message:
"error backing up sd-ext...not found" (something to that extent)
The second question is in terminal, when I do 'df' all my file system block sizes are 4096, my sdcard block size is 32768...
To me it makes sense that my sdcard block size should match my OS block size, no?
(I'm a complete noob so please, correct me where I'm wrong)
Sent from my Bulletproof_Doubleshot
Thanks to the hard work of Roman & Blue6IX
using Tapatalk

Sd-ext is a holdover from "app2sd" - nothing to worry about.
Sent from my Bulletproof_Doubleshot using xda premium

KrnlPanic said:
Woohoo! Fresh sdcard... Only an 8gb but I am back to 5.6gb free...
The only other question I have, well 2 actually are:
When performing my nandroid back up I get the following message:
"error backing up sd-ext...not found" (something to that extent)
The second question is in terminal, when I do 'df' all my file system block sizes are 4096, my sdcard block size is 32768...
To me it makes sense that my sdcard block size should match my OS block size, no?
(I'm a complete noob so please, correct me where I'm wrong)
Sent from my Bulletproof_Doubleshot
Thanks to the hard work of Roman & Blue6IX
using Tapatalk
Click to expand...
Click to collapse
We don't have A2SD yet, just buggy symlinks between /data/app and /sdcard/.android-secure.
Sent from a message in a bottle.

[Q] Question - SD Card Contents Disappearing

There is something on my phone that keeps deleting .avi video files from my SD card. I noticed when I could not find some videos I recorded that were very important so I recorded more videos just to see what would happen and sure enough at some point they disappeared and I know they were not moved or misplaced because they were too large to lose. I have also noticed most of my playlists are missing, although I may have deleted those, I just don't remember.
Is there a free app out there that can monitor my SD card for any changes and let me know which app is creating, changing or removing files? I have a lot of apps installed on my phone and don't want to remove them one at a time to see which app is misbehaving.

Have you searched your SDcard for *.avi files?
Swyped from my HTC Sensation.

Yes. I used Astro to search on my phone and when I did not find anything I put my SD card into my computer and searched with windows and found nothing.

Very strange indeed, but I have not encountered this.
Swyped from my HTC Sensation using xda premium.

Well do you know of any app that may help me solve this problem?

I had the same problem. Turned out I had faulty sd card. Since I replaced the sd card I haven't had the problem since
Sent from my HTC Sensation Z710a using xda premium

[Q] Persistent "SD Card not Found" issue.

Now before one annoying XDA member says "why didn't you search" blah blah. I did search and there is another A2 thread on this, but it addresses his other question on battery life and not the SD card one. Way too often (more of the time than not) I need to download something through the browser or take a picture or go in my gallery I get "download unsuccessful" or SD card not found and have to reboot. I have formated (will try that again though) and I am running Lithium v1.2.1. Any simple fix for this? I have tried other cards too btw. 8-gig, class 4

okachowwa said:
Now before one annoying XDA member says "why didn't you search" blah blah. I did search and there is another A2 thread on this, but it addresses his other question on battery life and not the SD card one. Way too often (more of the time than not) I need to download something through the browser or take a picture or go in my gallery I get "download unsuccessful" or SD card not found and have to reboot. I have formated (will try that again though) and I am running Lithium v1.2.1. Any simple fix for this? I have tried other cards too btw. 8-gig, class 4
Click to expand...
Click to collapse
Sounds like formatting is the issue here. When you formatted the sdcard, did you do so from within the phone itself, and not from in your computer? I'd try once more, just to be certain. Also, what else are you storing in the card, and are you copying the contents off before formatting and then pasting them back? If so, you may have a corrupted file or filed that are causing you grief...
Sent from my MB865 using xda premium

Try this. I used it to fix the SD issues I had on 2.3.5
https://play.google.com/store/apps/details?id=com.addz.mediascanner&hl=en

okachowwa said:
Now before one annoying XDA member says "why didn't you search" blah blah. I did search and there is another A2 thread on this, but it addresses his other question on battery life and not the SD card one. Way too often (more of the time than not) I need to download something through the browser or take a picture or go in my gallery I get "download unsuccessful" or SD card not found and have to reboot. I have formated (will try that again though) and I am running Lithium v1.2.1. Any simple fix for this? I have tried other cards too btw. 8-gig, class 4
Click to expand...
Click to collapse
You don't have to reboot.. Go to settings, sd card and phone storage, unmount the SD card, then mount it back.. That fixes it..
Sent from my MB865 using Tapatalk 2

[Q] Massive SD Card corruption, causes? *it could happen to you!*

I don't know what caused it.. any thoughts? Has this happened to you? Two nights ago, I recorded a 3.5GB 720p video using my phone, after that, I had issues using the camera app / gallery / ES file manager.. Also my battery life started to tank (later discovered it was the 'media' process constantly at 30% cpu), plus lots of random resets. So I *safely removed* my SD card, my phone went back to normal. If it was broken before I had taken that video, I don't think the camera app would have worked.. stock camera app buffer overflow ? Even the dates of some of those files are way wrong, some were even in future 2017 (hey look I invented time travel).
BACKUP YOUR STUFF NOW! I have instant dropbox backup of pictures, and it managed to backup a picture just moments before the video, and fortunately, the video was also ok (it didn't finish backup yet)... But tons of my existing pictures were trashed. Fortunately nothing outside of DCIM was broken.. but it could happen to you!!!
Hopefully this is not possible to the internal storage, would suck to lose files. Even stuff that is backed up, still a PITA.

User error. Don't remove sd card in that manner.
Sent from my SGH-T999 using xda app-developers app

iKoolkid said:
User error. Don't remove sd card in that manner.
Sent from my SGH-T999 using xda app-developers app
Click to expand...
Click to collapse
Oh, i didn't word that very well. I unmounted and safely removed the card from my Phone at that point, but it was too late. The corrupt files were preventing apps from reading the DCIM folder.

kevinf28 said:
Oh, i didn't word that very well. I unmounted and safely removed the card from my Phone at that point, but it was too late. The corrupt files were preventing apps from reading the DCIM folder.
Click to expand...
Click to collapse
that doesnt seem possible to me though, could be an issue with the rom not reading the card or he card itself sucks

The Fallen said:
that doesnt seem possible to me though, could be an issue with the rom not reading the card or he card itself sucks
Click to expand...
Click to collapse
Hmm... It is a lexar 32GB class 6 card. For digital cameras I normally use Patriot LX class 10's, but this was on sale... Perhaps your on to something.
Something I just thought, is perhaps the 'media' process choked on the 3.5GB file, started using tons of CPU and me opening the gallery app caused one of the reboots (while the SD card was still buffering), and that is what caused the SD card to corrupt?
There is some discussion here with similar 'media' process hanging on corrupted files: http://forum.xda-developers.com/showthread.php?t=1922230