Develop Bugs

Storage Card Trouble

Hi Guys, before hand great forum. Anyway, I've had my Hermes/ 2gb Sandisk Memory Card for about a year now. I've had absolutely no problems with it up until now. I upgraded to WM6 about 2 weeks ago, and everything was fine.
ANYWAY, My storage card is not recognized, I tried cleaning it, I tried using WM5Storage, nothing. When I am in finder, and I put in the disk, it seems to act as if something was placed in with a quick like flash of the screen indicating something was place, but nothing in finder. I tried to see if I could format it, however it acts like nothing is in there?
Any suggestions, Thanks again for your time.

http://forum.xda-developers.com/showthread.php?t=294324

It sounds like the disk has failed. Try to read the disk in another reader to check that the disk has not fried it's self.
If this is the case then you may be able to return to the manufacture if it has a life time warrenty. I.E. Kingston have this feature.
Hope this helps.
D

I agree with the above post. Try inserting your card into your computer, and see if it can be recognized that way. If so, maybe copy all of your data off the card, use Windows to format the card (FAT or FAT32 only), and move your data back. Good luck.

[Q] "SD Card mounted as read-only"?

Hi,
I'm posting this issue second time. I have a class 2 SD card with almost 1700mb of ext3 partition. the problem is that my SD turns to read only when accessing some files from my sd card. it says in the notification SD card mounted as a read only and then say "tap" to resolve the card responded unexpectedly.
tapping on it sometimes help if i remove the files that I was trying to access that created the problem. otherwise it mounts it as read only.

Hi, you sure your card is a genuine one? The problems you are having are identical to what I had. Turns out my 32gb card was in fact an 8gb card, and the problem was when capacity was reached it would go to read only. The only way to rectify this was to take the card out, place it in my PC card reader right click on properties of the drive and run the error checking tool. Hope this helps. Got my money back anyway thought £36 was a bit cheap lol! Try writing a large file to the card using your Computer, this should give you an indication if the card is genuine or not.

lewyharvey said:
Hi, you sure your card is a genuine one? The problems you are having are identical to what I had. Turns out my 32gb card was in fact an 8gb card, and the problem was when capacity was reached it would go to read only. The only way to rectify this was to take the card out, place it in my PC card reader right click on properties of the drive and run the error checking tool. Hope this helps. Got my money back anyway thought £36 was a bit cheap lol! Try writing a large file to the card using your Computer, this should give you an indication if the card is genuine or not.
Click to expand...
Click to collapse
Card is genuine. I have placed my card several times in my brothers htc hd and formatted it through windows. its almost 8 gb i checked it on windows. last time I deleted a folder which has wiered name as if the folder was corrupted. I deleted that folder n it was running fine again. but its back again.
mine came with telus, so it should be genuine. what does class signify? like i have class 2, what does it mean?

CLass is the speed of read and writes.
I recently had a problen like this it turned out to be a corrupt file in the .secure folder used for apps to sd.

rchatburn said:
CLass is the speed of read and writes.
I recently had a problen like this it turned out to be a corrupt file in the .secure folder used for apps to sd.
Click to expand...
Click to collapse
then I guess its because of corrupt files but why is it so often specially when I copy something from windows.

I had this problem once after disconnecting from a Windows PC, simply connect the sd car directly to a computer and run the windows verification tool, it finds the corrupt file and your sd card starts working again

hey i recently had the same problem ,, but i figured it out and this method should work fine...!!
>First of all you should know how this problem has occurred..??,
well the reason is, we all connect the phone to system in usb mass storage mode ,,but while removing we'll only give safely remove in the system and forget to do the same in the phone ,,,trust me this the core for this problem....sd-card cannot be fully unmounted by system ,,, so you have to manually do this by your phone
so if you are using the sense rom ,,after ejecting the disk in the system ,,,in your your phone's notification area
in ''connect to pc'' menu select charging only .....this will completely unmount your memory card .
>if you are using non sense rom ,,"turn off the usb" mass storage
do this every time you connect your phone to the system ..!!!
ok now solution for your problem..
>reboot your phone to recovery mode using rom manager...
>select partition menu
>now select mount usb storage ,,,
>now you have tow options
1. either you backup every thing and format your sd-card (recommended)
or
2.mount your sd-card and check for errors in windows,,,
this should fix your problem ..
remember ,,next time when you are connecting your phone don't direly unplug the the cable..!!

qariboy said:
Card is genuine. I have placed my card several times in my brothers htc hd and formatted it through windows. its almost 8 gb i checked it on windows. last time I deleted a folder which has wiered name as if the folder was corrupted. I deleted that folder n it was running fine again. but its back again.
mine came with telus, so it should be genuine. what does class signify? like i have class 2, what does it mean?
Click to expand...
Click to collapse
The Class number represents a multiple of 1 MB/s
So if 2 is written on ur SD card then it means that its capable of a read speed of 3MB/s

>First of all you should know how this problem has occurred..??,
well the reason is, we all connect the phone to system in usb mass storage mode ,,but while removing we'll only give safely remove in the system and forget to do the same in the phone
- Not always true, its happened to me on several occassions when not connected to PC etc... Flickie HD caused mine
If you have a mac the fix is - disk utilities - repair card
Full format I found to be better though

[Q] ES screwed up a simple file operation, now my Note says my SD's blank (it isn't).

*deep breath*
I noticed that my Note II had bounced a rather small app update for lack of space on the phone. Okay, fine. I have a bunch of games on there (GTA is huge) and I guess I have to move/delete some stuff. Then I realize that my camera app has been storing stuff on the phone instead of the 64gb Class 10 Kingston SD card (in b4 "Kingston is crap!"). So I make that change and tell the phone to start saving photos to the SD card. Fine. There are already some photo files on the SD card, so I decide to use ES File Explorer to move the existing photos from my DCIM folder to the one on the SD card. ES tells me everything went fine, and a subsequent check confirmed this. All good so far.
Then I went for a drive and decided to play tracks off my phone. What? Nobody home. No music for some reason. Everything's gone. Fine, I'll look into it when I get home.
This morning: "Oh, I have a photo of that! Let me just get it..."
Nobody home.
Go to ES File Explorer, and all the files and folders on the stupid SD card are 404.
Go to my computer. Connect my Note II and look at the drives on the phone. Windows shows the phone's storage, and shows the card storage, which says there's stuff on there (as in, space is taken up). Click into the drive and... Nothing's there.
Unmount the SD in Settings and put it into a card reader. Maybe the phone's goofing up, right? Windows says that the card needs to be formatted (because it's using an unfamiliar filesystem).
Nuts.
Put the card back into the phone. The phone will recognize the filesystem, so it should be-- What?
Phone says the card is now blank or using an unsupported filesystem.
So there's my problem. How do I proceed? I know that stuff's on there. I just know there's something stupid going on that's preventing me from getting at it.
As long as I can yank my latest photos off there, I don't mind wiping the card and starting over, since it's just media stuff I was keeping on there anyway. What do I use to crack into it?
Thanks in advance for any help you can offer.
UPDATE: Various file recovery apps (in both Windows and the phone) are telling me that the card now has truly nothing on it. There are many, many really great swear words I want to share with you right now, but am prohibited from using on this forum. It actually HURTS not to use them right now.
Why do people seem to have so many problems with 64gb Class 10 cards on the Note II?

I had similar problem, I was trying to use software for SGSII to map SD card as usb flash disk to a PC and it didn't work and when I disconnected I had same symptoms as you. I put the card in reader and connected to PC and repaired with Minitool (just search for "MiniTool Partition Wizard Home Edition"). I lost couple of folders but most of it was ok.
Good luck!

Sounds like You have a Corrupted Boot sector.
Put the SD card in a Card Reader on Your Windows PC.
Open a Command Prompt and Type This - chkdsk /X /F <SD card drive letter>:
If Your SD card is Drive G, It would Look Like This - chkdsk /X /F G:
This will repair the Boot Sector if that is the Problem.
Put the SD card back in Your Phone and You should be Good To Go.

[Q] SD card not letting me add or delete files

I've been spending waaay to much time trying to get this phone to work as I had expected with previous phones (even my LG G2x) giving me less problems. I recently bought a Sandisk 32gb, class 10 micro sd card and after transferring old music, pictures and videos from my old LG G2x with a 16gb card, placing files from my computer back onto my S4 with the 32gb card is a nightmare! Photos are transferred but too out of order to try and deal with although it's more the music problem that has me bugging. I have some success after putting about 3gb or so onto the new*32gb sd card but after that, the sd card flips out and starts using special characters for file names. Below I attached a screenshot of what I'm going through with another app called V1 Golf for Android. I'm stuck and any help is much appreciated. I can't delete anything on my sd card nor can I add. I've reformatted this card about 4 times now without success. Some say that a Sandisk have been nothing but problems for them, you think a Samsung card could be the fix?
I'm also running windows 7 on my computer as some people have said that could interfere with the transfer but it seems like that's not the problem being that downloading apps from google play shows corrupted files depicted below.

jakesteed808 said:
I've been spending waaay to much time trying to get this phone to work as I had expected with previous phones (even my LG G2x) giving me less problems. I recently bought a Sandisk 32gb, class 10 micro sd card and after transferring old music, pictures and videos from my old LG G2x with a 16gb card, placing files from my computer back onto my S4 with the 32gb card is a nightmare! Photos are transferred but too out of order to try and deal with although it's more the music problem that has me bugging. I have some success after putting about 3gb or so onto the new*32gb sd card but after that, the sd card flips out and starts using special characters for file names. Below I attached a screenshot of what I'm going through with another app called V1 Golf for Android. I'm stuck and any help is much appreciated. I can't delete anything on my sd card nor can I add. I've reformatted this card about 4 times now without success. Some say that a Sandisk have been nothing but problems for them, you think a Samsung card could be the fix?
I'm also running windows 7 on my computer as some people have said that could interfere with the transfer but it seems like that's not the problem being that downloading apps from google play shows corrupted files depicted below.
Click to expand...
Click to collapse
First, did you format this 32gb sdcard using fat32, exFAT or NTFS or ?
If you did not format it with fat32 then that could have caused the problem.
First you need to remove the card from the phone and plug it into your
computer using the adaptor which came with the microsd card so it can be
tested and repaired in windows.
Once the card is plugged into the computer and it's recognized by windows make note of the drive letter.
Then open a cmd prompt in windows by going to the start menu clicking on RUN then type "CMD" and click OK to open the DOS prompt.
Then in the black DOS window type: chkdsk E: /F then press "enter" to scan and fix errors on your microsd card.
NOTE: The E: is just an example, check the actual drive letter of the sdcard which is plugged into the computer.
Please note, doing the above will not delete any files or folders unless they are deemed unusable and cannot be fixed.
The chkdsk will NOT not format your microsd card.
Good luck!

jakesteed808 said:
I've been spending waaay to much time trying to get this phone to work as I had expected with previous phones (even my LG G2x) giving me less problems. I recently bought a Sandisk 32gb, class 10 micro sd card and after transferring old music, pictures and videos from my old LG G2x with a 16gb card, placing files from my computer back onto my S4 with the 32gb card is a nightmare! Photos are transferred but too out of order to try and deal with although it's more the music problem that has me bugging. I have some success after putting about 3gb or so onto the new*32gb sd card but after that, the sd card flips out and starts using special characters for file names. Below I attached a screenshot of what I'm going through with another app called V1 Golf for Android. I'm stuck and any help is much appreciated. I can't delete anything on my sd card nor can I add. I've reformatted this card about 4 times now without success. Some say that a Sandisk have been nothing but problems for them, you think a Samsung card could be the fix?
I'm also running windows 7 on my computer as some people have said that could interfere with the transfer but it seems like that's not the problem being that downloading apps from google play shows corrupted files depicted below.
Click to expand...
Click to collapse
Unfortunately I ran into a very similar situation with a 64gb SanDisk card. After several months of using it successfully without issue, out of nowhere some 20 gigs of data were stuck. It seems that 1 file in a nandroid was corrupt. After formatting, re-partitioning, deleting etc, etc. with Windows 7 as well as MiniTool Partition Wizard I was unable to ever get the corrupt file to delete. Thus leaving the $60+ card useless and a prime candidate for the trash. I chalked it up too a "bizarre" instance. I have since purchased 2 64gb cards, one to replace and one for my new S4. Haven't had the issue since (knock on wood). Not sure what the exact culprit was, the recovery? (TWRP), a freak occurrance? or Just a defective card? If you have any luck saving your card please post how you did. Although I realize this probably isn't helpful except to know your not the only one.

My sd card seems to be stuck.
About 20 of 64 gb being used.
Now I can't delete anything. Or add anything.
It appears to delete and then it just comes back.
Does that mean my sd card is dead.

scandisk 64gb
Had the same thing just happen to me. Transferred a few kernel files yesterday and today couldn't delete, add or format anything. I was able to copy all files to computer but that's it.

same thing happen to my sandisk 64gb class 10 microsdcard as well
is it a virus?

I had the exact same issue with a San-disk 64gb micro sdcard, I contacted San-disk, they offered me a replacement card.I suggest you do the same, hopefully they will exchange it for you.

MSK1 said:
My sd card seems to be stuck.
About 20 of 64 gb being used.
Now I can't delete anything. Or add anything.
It appears to delete and then it just comes back.
Does that mean my sd card is dead.
Click to expand...
Click to collapse
You can use another SD card to try whether this sd card is dead.
If anothe SD card can delete files, it proves that this sd card is dead, vice versa.

Did your problem solve? I'm experiencing now like with your problem. And I'm looking for an answer.

[Q] Problems using Galaxy Tab S as USB device

I have purchased a week ago a Galaxy Tab S 8.4 (T705M) and I am using a 64 Gb MicroSD in it.
I upgraded to 5.02 (OTA) since June/26.
I have problems with external MicroSD when the tablet is connected via USB to my PC (Windows 7, Home, 64 bits).
Whe trying to copy files from the PC to the tablet external MicroSD, the operation is very, very slow and some files (existing previously in the external MicroSD) disappear. Very annoying.
I had same problem with another Tab S I purchased by January and I returned it to the vendor. In that case, the tablet was on Kit Kat (as it is sold).
Yesterday, after the Tablet erases several directories from the SD, I turned off the tablet and extracted the SD. I tried to fix the SD directly connected to the PC but the SD appears as "read only".
After trying for a while I gave up and I formatted the SD (extFAT) and copy the info from a backup I did before putting the SD in the teeth (fangs?) of the tablet (yeah, I guessed the tablet would be as a wild beast when managing SD's). The "re"formatted microSD behaved as a charm, all info copied without any problem (but it took almost 3 hours copying 50 Gb at about 7 Mb/second).
On the other hand, I used this same SD card in my old Note 8 (Jellybean) for more than a year without problems.
Now, I guess the only way I have is extracting the SD card and edit its content only connecting it directly to a PC.
What can I do to calm down the beast and edit external MicroSD connecting the tablet via USB without losing information and with a reasonable speed ?
Any suggestion ?

Root your device and apply the sd card fix. Also 7mb/s seems about normal for a cheap micro sd card.

I have not had any problems with files disappearing, have you confirmed your 64gb microsd is not a fake.
I have a Samsung 64gb microsd, and i got around 9MB/s copying a movie from my notebook to my T800 10.5"
John.

Thanks for the comments.
My card is Verbatim Class 10 and it worked perfectly in my old Note 8. It works really as stated for a class 10 SD (10 MB/s at peaks as stated in https://www.sdcard.org/developers/overview/speed_class/) but, as with any device, speed depends on several factors (file sizes, buffer in the source PC, etc) and the average obtained is really about 7 MB/s or so.
I guess the problem is related with something in Lollipop (but Tinderbox says has no problems) or, more probable, driver in the PC.
Tinderbox, are you using Kies to transfer ? are you transferring from a PC or a Mac ? which class is your SD ? have you enabled "USB debugging" ?
I purchased an 8 GB SD in order to make some tests. This SD is Class 4 and formatted FAT32 but anyway I will test it to learn about this riddle....
In the mean time, any suggestions are welcome and I repeat, thanks for the answers.
UPDATE:
Sandisk SD (8 GB, FAT32) worked perfectly, no erases, good speed (Class 4, speed tablet connected via USB about 4 MB/s).
Next test planned: reformat Verbatim 64 GB using FAT32.

I am on kitkat 4.4.2 and i dont use kies, I just drag and drop my files from my notebook to the tablet, I did not need to enable usb debugging, my 64gb is full of video, I copy them virtually every day and have had not problems.
I think i read about another 8.4" owner having problems with his microsd card i will have a look for it.
I have only ever bought Samsung memory cards for years and i have never had a problem.
Have you tried re-installing the device driver, you can do it from the kies menu.
John.

Tinderbox (UK) said:
I am on kitkat 4.4.2 and i dont use kies, I just drag and drop my files from my notebook to the tablet, I did not need to enable usb debugging, my 64gb is full of video, I copy them virtually every day and have had not problems.
I think i read about another 8.4" owner having problems with his microsd card i will have a look for it.
I have only ever bought Samsung memory cards for years and i have never had a problem.
Have you tried re-installing the device driver, you can do it from the kies menu.
John.
Click to expand...
Click to collapse
Thanks for your complete answer(s).
I have made several (a lot) of tests without any success. In all cases SD can not be written from a PC (when connected via USB) and erasing files using android app sometimes cause corruption.
The card is completely readable (a little laggy to begin to work after it was unmounted and reinserted). The card works without errors when connected directly to the PC.
These are the some tests I have made (reformatting and restoring the files between one test and the next, a real nightmare ):
1. Uninstalling Kies
2. Reinstalling Kies (and refreshing driver)
3. Uninstalling Kies and Samsung driver. Uninstalling USB driver and erasing it completely and let windows select the driver
4. Formatting the card in FAT32 via some software
5. Trying to format the card via command in windows (from the console). It takes about one hour and abort near the end with an error messages explaining that windows can not format FAT32 for this capacity
6. Even trying to partition the SD via DISKPART. I can create one primary partition (32000 MB) but DISKPART shows all disk allocated and do not allow to create another partition (either primary or extended)
Last symptom: I erased one file from the root directory of the SD using "My files" (the app preinstalled in the firmware by Samsung). The file disappear but My files shows a ghost file named with special characters.
When the SD is consulted via Root Explorer (an android file manager) or even connected directly to the PC, the ghost file did not show.
@tinderbox: could you remember who (or where do you read about) the other " 8.4" owner having problems with his microsd card " ?
Some body could suggest solution ?
Thanks for any help or guide.

Hi.
You did format the micosd card using the tablet, you cannot format on an computer and then use it in your tablet, the tablet uses it own file system, so you have to format the microsd using the tablet.
John.

Format the card to exFat in windows. It only takes a few seconds to format my Samsung Evo 64gb.
If it doesn't work then your card likely has issues.

Finally success
Thanks for your suggestions.
I tried almost everything:
1. Formatting FAT32
2. Reformatting in the tablet
3. Reformatting in the PC
4. Even formatting using a software from Verbatim website
The problem persists: SD Card is not editable (delete files, write files, edit files) when inserted in the tablet. SD works perfectly in the PC.
Finally I purchased another SD 64 Gb Toshiba Class 10. The SD package says it can work at 40 Mb/sec. The card write at 10 Mb/sec but it reads faster.
This Toshiba card works perfectly. I can erase or move files using android file manager (My Files app), I can write from the PC using tablet connected via USB to the PC. I can create files directly in the tablet (I used Jota+ to create a text file).
Verbatim card and Toshiba card specs seem identical, except by the speed claimed in the Toshiba package. There is some difference I am missing but definitively these cards are not equal (something in the card data bus ?)
I repeat, thanks to everybody who tried to help.

I only ever buy Samsung memory cards for years, and i test every one for errors and i have never found any, And if an Samsung memory card does not work in an Samsung tablet, well it is not going to happen, but people go for the cheap alternative.
John.