Develop Bugs

Erasing my SD Completely...question

Ok, so I have a HTC EVO 4G and it's currently rooted running a MikRom. Recently, for some reason, when I plug my phone to a Mac or a Windows computer it does not recognize the phone in USB Mode. Specifically on my windows pc, I get a
"USB Device not recognized One of the usb devices attached has malfuntioned etc.. and I went through the process of trying to install the driver but nothing
I have also unmounted the card in settings and mounted it back and still nothing.. What I was going to do was completely erase my SD Card but will that erase my Root however?

It will not erase root.
Sent from my PC36100 using xda premium

Think about it like this; can you take your SD card out ans have the phone run perfectly fine? Then you can wipe it
Having trouble with AOSP? http://forum.xda-developers.com/showthread.php?t=1295702

Very True, Do you think that reformatting my SD Card will possibly fix the issue of it not mounting on my computer

Globetrahter said:
Very True, Do you think that reformatting my SD Card will possibly fix the issue of it not mounting on my computer
Click to expand...
Click to collapse
It's possible. However, before you do that, take the card out ant put directly into a card reader for a computer. This will let you know if the card is bad, or maybe the phone's reader is bad. If the card is bad, you can try error checking it in Windows, and maybe salvage the data on the card.
But if that doesn't work, try re-formatting it. It may help, it may not. If not, new 8gb cards are only a few bucks now.

Ok I have one at home Ill try

sitlet said:
It's possible. However, before you do that, take the card out ant put directly into a card reader for a computer. This will let you know if the card is bad, or maybe the phone's reader is bad. If the card is bad, you can try error checking it in Windows, and maybe salvage the data on the card.
But if that doesn't work, try re-formatting it. It may help, it may not. If not, new 8gb cards are only a few bucks now.
Click to expand...
Click to collapse
It very well could be your USB. Use an adapter as posted, then try another USB.
Sent from my PC36100 using xda premium

Frozen SD card

Over the weekend my phone has decided to not read my sd card anymore. I copied the whole card to my external drive and formatted it via the computer twice, I booted the phone back up and everything on my card was still there. I used the option in my rom (ILWT) to erase my memory card, no luck. I then formatted the card via cmd prompt today which didn't work, and then my last shot in the dark was to reformat the card via 4EXT recovery. My phone still gives me the "insert sd card" when I take a photo and all my of files are still on it. Anyone have an idea of what happened?

the sd card slot probably is bad if it won't work in recovery or a rom, could be the small cable that connects it or the tray it self. about 10~15 on ebay and a 10 min fix
Sent from my HTC Vision using xda premium

demkantor said:
the sd card slot probably is bad if it won't work in recovery or a rom, could be the small cable that connects it or the tray it self. about 10~15 on ebay and a 10 min fix
Sent from my HTC Vision using xda premium
Click to expand...
Click to collapse
Good call, will investigate.

Have you tried the card without the phone? In a pc reader or another device.

GinoAMelone said:
Have you tried the card without the phone? In a pc reader or another device.
Click to expand...
Click to collapse
Yup, card still has everything on it.

It seems more like a broken SD card to me. Have you tried another one?
You can also try some low level formatting tool like HDD Low Level Format Tool (from hddguru.com).

martx said:
Yup, card still has everything on it.
Click to expand...
Click to collapse
Have you attempted to copy off everything on the card, and then doing a full format of it on the computer (including maybe low level formating).
IF that still doesn't work, try another SD card, and if that doesn't work, I suspect the slot itself is bad.

MicroSD card losing connection with phone = MTP issues on JB 4.1.1 official release

Every time I flash anything based on the official JB 4.1.1 release, my 32GB MicroSD card (Patriot brand?) freaks out. The phone will say it's "unexpectedly removed" and then adds it back in, and removes it, over and over.
It's happened on all three JB 4.1.1 ROM's I've tried.
I thought my MicroSD was going bad so I low-level formatted it in Windows (hated doing this) and still had trouble. But ONLY with the card in the phone. Windows usually liked the card just fine.
So what I did to resolve it was use Titanium Backup Pro to "freeze" the "MTP Application". After doing that, my MicroSD works great in the phone and AFAIK, I haven't lost any functionality. So I'm not sure what the "MTP Application" is or does, but so far.... so good.
This post is just a heads up to others, in case anyone else runs into this problem.
Or in case anyone wants to tell me WTF is wrong.

Ive had this issue as well twice. Both times I had to format the sd card in my pc and it will work fine for a while. Im curious to know if you are using es file explorer? Im thinking it might have something to do with this issue.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

garydv2002 said:
Im curious to know if you are using es file explorer?
Click to expand...
Click to collapse
Nope. Never.
Root Explorer + TWRP (if that matters).

CZ Eddie said:
Nope. Never.
Root Explorer + TWRP (if that matters).
Click to expand...
Click to collapse
Hmm come to think of it I just recently purchased root explorer about the time all this started but surely an app couldn't cause this issue? Heck I dont know it happens so random it hard to pinpoint the problem thats causing it. If I figure it out I will let you know
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

Ive been trying to duplicate the problem all day with no success. However I have froze the MTP app so maybe thats what the cause is? Would you happen to be using a sandisk micro sd? Because I am..
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

Ahh hah I duplicated the problem on my phone anyway. I used the my file app to move a rather large file from the internal sd to my external sd and afterwards it lost connection. I had to remove the sd card and install it several times to get it to mount back again. Im not sure if its the moving of the file or the my files app itself that is doing it. I also noticed the media scanner isnt running after moving the file. So I hadnt pinpointed the exact cause but im dang sure getting closer. And I dont think its a bad sd card because I tried another and it did it with it too
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

You were able to duplicate it even with MTP frozen?
Wow, I have yet to recreate the issue with MTP frozen.
My SD is a Patriot brand. Purchased at Fry's Electronics.

CZ Eddie said:
You were able to duplicate it even with MTP frozen?
Wow, I have yet to recreate the issue with MTP frozen.
My SD is a Patriot brand. Purchased at Fry's Electronics.
Click to expand...
Click to collapse
Yea it happened with MTP frozen and unfrozen. Ive tried freezing the my files app and every file explorer on my phone. I just cant put my finger on the cause it happens so random. But it seems me and you are the only ones having this issue so im wondering if we didnt get a bad flash when we updated. When I updated via kies it did not do a full wipe update it did what is known as a dirty flash which I never do because you end up with issues like this. So if we continue to ask each other questions we will eventually figure out what the common link as far as if its an app we are using and things like that.
So did you update via kies or odin?
If you updated via odin where did you get your firmware file file from and if you used odin was it odin on the pc or mobile odin?
And was your update a full or a dirty flash?
We are gonna figure this thing out one day lol.....
Edit.... well apparently we are not the only ones having this issue. Over on droid forums there are several s3'owners most on t mobile but anyway it appears there are a few phones out there with this problem and the only fix is to replace the phone and sd card because the phone ruins the card by unmounting it without stopping it first. My phone is still under warranty so I will be calling ATT tomorrow for them to replace my phone and throw a fit for them to replace my micro sd. I paid 48 bucks for this card and I think ATT should replace it since their faulty phone ruined the card
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

Wow.
I had the problem with two or three different ROM flashes. So it wasn't just one ROM flash.
Each time, freezing MTP Application has resolved the issue for me.
I'm going on ~4 days now with my current ROM and no more issues since freezing MTP.
Maybe there are a couple different SD card related issues out there.

I had the same problem with ADATA and Kingston brand sd cards. I tried the Sandisk 8GB from my old phone and no problems so far.

Freezing the mtp app has seemed to slow it down. The only problem with freezing mtp is that is how the phone mounts to the pc. Mine just did it again but I unfroze mtp to hook my phone to the pc and right after I backed some stuff up and unplugged it, before I could freeze mtp again it unmounted the card. Ive also tried several different sd cards and several different sizes even tried a 2gb Samsung card with the same results. Im thinking hard about going back to ics to see if that will resolve the issue. ...
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

I found that my 64GB card was not recognized by the newer kernels - when I use the older kernels or stock, it is recognized, otherwise, the ROM attempts to read the card, and then states it is 'ready to be removed'.

alisiena said:
I found that my 64GB card was not recognized by the newer kernels - when I use the older kernels or stock, it is recognized, otherwise, the ROM attempts to read the card, and then states it is 'ready to be removed'.
Click to expand...
Click to collapse
Try reformatting the 64gb card to a fat 32 file system. 64gb cards come formatted exfat and some s3's have had trouble reading them. Put it in a pc into the card reader and open my computer. Then right click on the drive thats showing your card. Ex drive E or F. Mine is drive N. Once you right click on it click format and a box will pop up and you will see the box that says exfat. Click the drop down box and change it to fat32 then click format and your done. Once it finishes put it in your phone and it should recognize it...
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

garydv2002 said:
Well my 64gb micro sd came today from Amazon and from what ive read on xda and the net I would need to change the file system from exfat to fat32. So I put it in the pc pull up mini tools partition wizard and it gives me no option to format it, I try windows no option for fat32 only ntfs or exfat so I try a couple of others with the same results. Then I try hp format tool and finally format it to fat32 then put it in my phone and it says its damaged and needs formatting so I do and put it back in the pc and im back to exfat. So it seems to only work in my phone in the exfat format soooo im just gonna leave it alone. Oh I even tried formatting it in command prompt and changing the file format and it fails so now im starting to wonder if thats what happened to my old 32gb card and why I suddenly starting having trouble out of it when I updated to jb is because it was fat32. Maybe this new jb dont handle fat32 well or maybe my s3 dont like fat32. Hell I guess its just a mystery. ....
So I would suggest if your having sd issues try formatting your card to exfat and see if that helps the connection issues
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2
Click to expand...
Click to collapse
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

[Q] Micro SD card works on PC but not on S4

Hi,
I have just purchased 64 GB Class 10 Samsung micro SD card with a SD adapter and USB adapter.
I plugged it in to my S4 and everything seemed OK. Copied all of the contents from my old SD. Everything was working fine until I restarted my phone. After restart all of the files were present by could not access them. Some of the files and folders had ~ as prefix. Plugged the card in my PC and the files were corrupted. Recopied everything and tried several times again. The same outcome. Reformatted the card to exFAT and to FAT32 both from my phone or my PC using several available programs. No success. Whenever I unmount the SD card or restart the phone the files get corrupted. So I figured the card is broken. So I decided to test it only on my PC. Copied lots of stuff to it (music, movies etc.) and started using it on my PC. I have mounted/unmounted it on my PC probably 100 times and it works just fine. So that means that the card is fine (or am I wrong???). Also tried it to plug it with the usb adapter into my TV. It says that usb disk is empty.
The files only seem to get corrupted when I place the card in my S4 and unmount it/restart the phone. The card works just fine on my PC.
Does anyone else have this issue?
I am running a rooted 4.3 Android OS.
Thank you!

You have to partition the card into 32GiB chunks. So make two, 32GiB partitions and it will work fine in your S4, except it will show you have two external sd cards.
Sent from my SGH-M919 using XDA Premium 4 mobile app

vladimir.gjurovski said:
Hi,
I have just purchased 64 GB Class 10 Samsung micro SD card with a SD adapter and USB adapter.
I plugged it in to my S4 and everything seemed OK. Copied all of the contents from my old SD. Everything was working fine until I restarted my phone. After restart all of the files were present by could not access them. Some of the files and folders had ~ as prefix. Plugged the card in my PC and the files were corrupted. Recopied everything and tried several times again. The same outcome. Reformatted the card to exFAT and to FAT32 both from my phone or my PC using several available programs. No success. Whenever I unmount the SD card or restart the phone the files get corrupted. So I figured the card is broken. So I decided to test it only on my PC. Copied lots of stuff to it (music, movies etc.) and started using it on my PC. I have mounted/unmounted it on my PC probably 100 times and it works just fine. So that means that the card is fine (or am I wrong???). Also tried it to plug it with the usb adapter into my TV. It says that usb disk is empty.
The files only seem to get corrupted when I place the card in my S4 and unmount it/restart the phone. The card works just fine on my PC.
Does anyone else have this issue?
I am running a rooted 4.3 Android OS.
Thank you!
Click to expand...
Click to collapse
If you don't want to make two seperate partitions on your external microSD card then do the
following:
Remove your external microSD and plug it into a card reader and or the adapter which came
with the card then plug it into your computer.
Make an empty folder on desktop of computer and copy all files and folders from the microsd
card into the empty folder.
Format your external microsd using this windows utility and copy all the files/folders back onto
the card from your computer and replace it into your phone.
Here is the direct download link for this fat32 formatter which is a windows utility:
http://download.cnet.com/MiniAide-Fa...74ffba47b88ad1
By doing the above your external microSD card should work fine in your phone.
Good luck!

xdapowerapps said:
You have to partition the card into 32GiB chunks. So make two, 32GiB partitions and it will work fine in your S4, except it will show you have two external sd cards.
Sent from my SGH-M919 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Thank you for your reply. I did as you suggested and it worked for some time. I mounted/unmounted several times and it seemed fine. Then did a restart and the files were corrupted again.
Why does the card need to be divided in 2*32GB in the first place? Isn't the S4 suppose to support 64 GB cards?
Your suggestion seemed to isolate only part of the problem. It remains only the restart. What can be associated with corrupting data on sd card and android restart?

Misterjunky said:
If you don't want to make two seperate partitions on your external microSD card then do the
following:
Remove your external microSD and plug it into a card reader and or the adapter which came
with the card then plug it into your computer.
Make an empty folder on desktop of computer and copy all files and folders from the microsd
card into the empty folder.
Format your external microsd using this windows utility and copy all the files/folders back onto
the card from your computer and replace it into your phone.
Here is the direct download link for this fat32 formatter which is a windows utility:
By doing the above your external microSD card should work fine in your phone.
Good luck!
Click to expand...
Click to collapse
Thank you for your reply. Unfortunately it didn't work. I tried similar thing with other software also (Minitool partition wizard, Panasonic SD formatter, etc.). When I unmount/mount or restart data corrupts

vladimir.gjurovski said:
Thank you for your reply. I did as you suggested and it worked for some time. I mounted/unmounted several times and it seemed fine. Then did a restart and the files were corrupted again.
Why does the card need to be divided in 2*32GB in the first place? Isn't the S4 suppose to support 64 GB cards?
Your suggestion seemed to isolate only part of the problem. It remains only the restart. What can be associated with corrupting data on sd card and android restart?
Click to expand...
Click to collapse
No, it depends on your kernel if it supports a certain FS. I am not sure why your files are being corrupted other than one, your ROM isn't unmounting your card properly on restart or two, your card has issues. Again, I am not sure.
Sent from my SGH-M919 using XDA Premium 4 mobile app

In that case do you suggest I try changing kernel? Do you think that might help? My kernel version is 3.4.0-2082040 if that means something. Do all S4s come with the same or different kernel? Will it help If I unroot or maybe install other ROM for different country or different operator?

re: external sdcard
vladimir.gjurovski said:
In that case do you suggest I try changing kernel? Do you think that might help? My kernel version is 3.4.0-2082040 if that means something. Do all S4s come with the same or different kernel? Will it help If I unroot or maybe install other ROM for different country or different operator?
Click to expand...
Click to collapse
All the stock S4's come with the same kernel, so if your S4 is stock then it's not a kernel issue.
Have you tried any other external microsd cards, if not that's what I would do next.
Most of the better microsd cards have either a 2-3 year or a lifetime warranty.
Good luck!

I currently use my old 8GB sd card with no problems whatsoever. My S4 is rooted. Does that change the kernel? Should I unroot?
Misterjunky said:
All the stock S4's come with the same kernel, so if your S4 is stock then it's not a kernel issue.
Have you tried any other external microsd cards, if not that's what I would do next.
Most of the better microsd cards have either a 2-3 year or a lifetime warranty.
Good luck!
Click to expand...
Click to collapse

Suddenly Getting SD Card Unexpectedly Removed Error

Been working fine for over a month now all of a sudden the SD card appears to be randomly mounting/unmounting itself and has become unreadable on my phone.
I've put the SD card in my PC and it works fine so I suspect my phone has developed a fault. I hope I don't have to get an exchange as it's otherwise faultless and I'm dreading getting a unit that can't be S-Off'd
I haven't modified or installed anything prior to the fault developing,
Any tips would be most welcome.
PS It's a genuine Transcend Premium 300x 64GB bought from MyMemory.

stuart0001 said:
Been working fine for over a month now all of a sudden the SD card appears to be randomly mounting/unmounting itself and has become unreadable on my phone.
I've put the SD card in my PC and it works fine so I suspect my phone has developed a fault. I hope I don't have to get an exchange as it's otherwise faultless and I'm dreading getting a unit that can't be S-Off'd
I haven't modified or installed anything prior to the fault developing,
Any tips would be most welcome.
PS It's a genuine Transcend Premium 300x 64GB bought from MyMemory.
Click to expand...
Click to collapse
Is it exfat or fat 32
Sent from my HTC One_M8 using XDA Premium 4 mobile app

Android The Greek said:
Is it exfat or fat 32
Sent from my HTC One_M8 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
exfat

stuart0001 said:
Been working fine for over a month now all of a sudden the SD card appears to be randomly mounting/unmounting itself and has become unreadable on my phone.
I've put the SD card in my PC and it works fine so I suspect my phone has developed a fault. I hope I don't have to get an exchange as it's otherwise faultless and I'm dreading getting a unit that can't be S-Off'd
I haven't modified or installed anything prior to the fault developing,
Any tips would be most welcome.
PS It's a genuine Transcend Premium 300x 64GB bought from MyMemory.
Click to expand...
Click to collapse
so are you on stock? if so have you tried a factory reset?

stuart0001 said:
exfat
Click to expand...
Click to collapse
Copy everything off sd card. Convert to fat 32. Copy everything back.
Sent from my HTC One_M8 using XDA Premium 4 mobile app

lukes91 said:
so are you on stock? if so have you tried a factory reset?
Click to expand...
Click to collapse
Stock but rooted and S-Off'd
I've not tried a reset yet but it's been as good as gold until about an hour ago when it suddenly started flashing between "preparing SD card" & "SD card unexpectedly removed"

Android The Greek said:
Copy everything off sd card. Convert to fat 32. Copy everything back.
Sent from my HTC One_M8 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I'll give that a go but why has it been working fine for over a month whilst exFAT if that is now the cause?

stuart0001 said:
Stock but rooted and S-Off'd
I've not tried a reset yet but it's been as good as gold until about an hour ago when it suddenly started flashing between "preparing SD card" & "SD card unexpectedly removed"
Click to expand...
Click to collapse
well, a simple solution is to enter recovery and see if the sdcard works there if this way it works, change the rom/perform factory reset, if this doesn't, well, you might try to flash everything again, but i's possible that the sd slot is broken...
i wish you all the luck, let me know

I would copy EVERYTHING off the card to a PC and do a format and try a different file system. I would has perform the format on the phone, to make sure its gets formatted to the correct file systems.
Long story short, It sounds like you memory card is starting to get Corrupted. I have to SanDisk cards that started doing that in the biginning and ended up not being read at all on PC nor the Phone.
Also while its doing that, youll also notice the battery start to drain more, at leasst thats what happended on my Note 3 when I had the san disk cards going corrupt.
Ended up buying new Card and now everything is fine.
I doubt is the card reader built in phone, more then likely its your memory card going corrupt.

hypersonicx said:
I would copy EVERYTHING off the card to a PC and do a format and try a different file system. I would has perform the format on the phone, to make sure its gets formatted to the correct file systems.
Long story short, It sounds like you memory card is starting to get Corrupted. I have to SanDisk cards that started doing that in the biginning and ended up not being read at all on PC nor the Phone.
Also while its doing that, youll also notice the battery start to drain more, at leasst thats what happended on my Note 3 when I had the san disk cards going corrupt.
Ended up buying new Card and now everything is fine.
I doubt is the card reader built in phone, more then likely its your memory card going corrupt.
Click to expand...
Click to collapse
I agree most likely the card. I'd download an sd card format tool and do a full format, don't use Windows format then do full check for bad sectors. I had a similar problem and it was the card at fault, but strangely worked ok on the pc.

stuart0001 said:
I'll give that a go but why has it been working fine for over a month whilst exFAT if that is now the cause?
Click to expand...
Click to collapse
I have been through many a Samsung phones and always had corrupt sd cards in exfat. One day I saw a thread that said convert to fat32 and have never had a problem since.
Sent from my HTC One_M8 using XDA Premium 4 mobile app

Thanks for all the advice.
I could read the card in recovery but it failed to format there.
I tried to format in windows but my only options were NTFS or exFAT, no FAT32. But this failed anyway also.
Downloaded a SD format application but this said the card was write protected and to move the lock switch, obviously MicroSD has no switch like standard SD.
So next I deleted all the files on the card and ran h2testw test. This failed and reported card is probably faulty.
Then I checked the contents of the card again and all the original files were back again, so it's definitely 'Donald Ducked'. I was able to get all my files backed up and fortunately I had my photos already thanks to Dropbox & G+.
So I will now look at getting MyMemory to replace it but my fear is they will want me to return the faulty card but it has sensitive information on it that I can't delete. Any ideas on how I can wipe it?

stuart0001 said:
Thanks for all the advice.
I could read the card in recovery but it failed to format there.
I tried to format in windows but my only options were NTFS or exFAT, no FAT32. But this failed anyway also.
Downloaded a SD format application but this said the card was write protected and to move the lock switch, obviously MicroSD has no switch like standard SD.
So next I deleted all the files on the card and ran h2testw test. This failed and reported card is probably faulty.
Then I checked the contents of the card again and all the original files were back again, so it's definitely 'Donald Ducked'. I was able to get all my files backed up and fortunately I had my photos already thanks to Dropbox & G+.
So I will now look at getting MyMemory to replace it but my fear is they will want me to return the faulty card but it has sensitive information on it that I can't delete. Any ideas on how I can wipe it?
Click to expand...
Click to collapse
How did you attach the card to the pc? Try a usb card reader and then try again. If still problems download mini partition tool (Google) and delete the partition. You can then wipe it properly.

I reformatted the SD card from the settings within the phone and since then it been working fine :\
make sure you're using 2.0USB also..

when i connect my phone to charger
Its been few days i am noticing when i conmect my phone to charger it says 'sd card removed unexpectedly or either it suddenly stops showing content from my phone, then i have to go to settings unmount/mount the sd card frkm storage option and then it shows the content even when charging, or sometjmes it doesn'fshow option for that so on that case i have to restart my phone. What could be the possible reason and solution to that. It was fine on 4.4.4 now i am on 5.0.2 all stock htc one m8 h/k edition with sim unlock and s-off via sunshine.