sd card recognized, shows available storage, but no files - Android Q&A, Help & Troubleshooting

I just starting have a problem today that I hope someone can help me fix. I was transferring a file from my PC to my phone when I received a "File Cannot be Transferred" notice, and a hanging copy progress screen. So I clicked cancel, safely removed my phone, and unplugged. Now I have nothing showing on my SD, in Storage Settings it displays the card along with an accurate Storage remaining (4.5 GB out of 64 GB), but the file explorer displays no files. I've tried rebooting, unmounting/remounting my card, and still nothing. I went into recovery and can see files and deleted the partially transferred file, when I reboot, the SD card loads, Folder Mount runs and successfully mounts to my SD, I can even go to the file explorer and see files briefly, then within a minute or two.....poof everything disappears. Does anyone have any suggestions? Thanks in advance.

Related

SD Card Swap and Lost Apps

I used the instructions from iJimaniac to swap my storage from internal to external (love the mass storage now!) however all my apps that I originally had moved to the SD card have suddenly disappeared and now i have to remember and re-install them. I made a copy of everything under /mnt/sdcard and moved it to my external SD card before making the switch so that everything would still be linked ok. Any ideas on what went wrong? Note: i took everything on my external SD card and put it in a separate folder on my external SD card so I wouldn't lose any of that.
Well, I used a PC to copy .android_secure folder from the real external_SD to the new "fake" external_SD. If that doesn't work, I would copy back the original vold.fstab then move all apps to internal, then use modified vold.fstab and move your apps back to sd if you want. Remember to reboot after making a change. Several reboots might even be needed for all apps to show up (might want to try that before anything). Hope this helps!
Ok well the problem is apparently that the .android_secure folder on the sd card is empty. Strangely it also has no permissions and refuses to let me change it. Whenever i try to replace it with the full .android_secure folder it gives me a black screen and i have to restart. Any idea what might be wrong?
Well, it might not actually be empty, it looks empty when viewed with an android file browser, but when you look at it on a computer (might need to disable "hide protected system files" in windows folder options) you should see stuff in it. So, you need to copy the .android_secure folder FROM your REAL microSD card TO your REAL internal memory using a pc, not an android file browser. To be clear, I have figured out that android transfers the app to your sd card when you select "move to usb storage", so that can be deceiving. Your apps were on the sd card, but now you need to transfer them to your usb storage by moving the .android_secure folder. Hope you figure it out!
Ah something decided to start working again and all my apps came back! Thanks for your help!
No problem! What was probably wrong was your player was rebuilding the dalvik-cache. It sometimes takes a while I find. Glad you got it working.

[Q] Cannot write to external SD or change permissions

So, this is maddening. When I first got my phone I popped in the external card and it worked with no hitches. Set my camera to store pictures on it, that worked. I set the default Titanium backup location to the external card, that worked as well.
And then today, it... stopped working. If I take a picture it says "cannot write to SD card, changing storage to internal memory". And titanium backup says that the external card is non-writable. Permissions of external card are set to 775 and if I try to change it to 777 (if that is even the problem) it gives me "Error! Changing permissions was not successful. Please note that some file systems do not allow permission changes." I am rooted.
If I plug my phone into my computer, it defaults to "plugged in as installer" and I have to set it to "media device" each time. When I do, I click on "Card" (which already has music and pictures on it) and the folder comes up empty.
Just yesterday I was dragging and dropping music into the SD card folder from my computer. So, I have no idea what happened. I've tried unmounting/remounting the card within my phone to no avail.
Any ideas?
Edit: I don't know if it's related but how do I get this stupid verizon updater thing to stop auto-running when I plug in the phone? Even with "connect USB as media device" checked it still tries to run this updater installer. I even installed the damn thing and it still tries to run it again every time I plug it in.
Edit2: My gallery isn't even reading the pictures from the card anymore. It's only displaying pictures on internal memory.
Edit3: Ownership of extSdCard is "1000: system". If I try to change it to "0: root" it won't let me. Internal storage is owned by root and is set to 777 permissions.
Edit4: "Hardware ID Missing" when I plug the phone into my computer. I can still access internal memory through through the PC, just not the ext card.

[Q] external SD issues (stock, rooted)

I'd noticed a corrupt file was keeping my external SD from functioning correctly, so I:
took it out
inserted into my PC
deleted the file
moved everything off
formatted it
moved everything back on
put the card back in
The phone then noticed it was inserted, went through scanning, etc, so I thought I was ok. Then I went to look at my photos & they weren't there. So I looked at the storage, & it says, "insert SD card for mounting." If I take it out & re-insert it, the phone notices that it's there, & scans, etc, but I can't, for example, even create a folder w/ES File Explorer. I also can't use the phone's "erase SD card" utility.
I can read the card & move files on/off via my PC no problem. Anyone ever seen/been through something like this?

[Q] CM11 - 64GB SD card troubles (missing folders)

I have a galaxy S4 Sprint, and I just bought a Sony 64GB class 10 card from Amazon. I formatted it with SD Formatter (exFAT) with the program from sdcard.org.
I copied all my files over, and I had about 3GB of photos in DCIM/Camera/. Then today I tried to view my gallery but the photos didn't show up. I checked in a file manager /storage/sdcard1/DCIM/Camera/ and it said 0 files. I thought "Great, it lost the whole folder, now I'll have to copy it from my old card"
So I put in my new card into my SD card reader [microSD to SD adapter, into laptop SD slot], and I navigate to DCIM/Camera/, and on my computer, it shows 3GB worth of files in there! So I move it back to my phone, and it shows 0 files. I am 100% sure I'm in the right directory since I made a blank file in DCIM/ and it shows up on both laptop and phone.
another thing, when I try to put anything in DCIM/Camera/ it fails (file manager gives error, but terminal command "touch test-file.txt" doesn't give error, but "ls" shows no files there)
I am running the latest CM11 snapshot M3 for jfltespr [Sprint GS4]. I'm quite baffled by this. Can anybody suggest something to fix this issue? I was thinking of formatting my card to ext4, but windows doesn't support it natively [I have Linux dual boot though].
Update: since nobody suggested anything, I renamed Camera to Camera2, then created a new directory, Camera, then cut/paste all pics in Camera2 into Camera, and now I have everything back in my gallery..
Also I tried running chkdsk on the sd card, but it found no errors. I ran it twice. Anyway, not sure what happened, but hopefully it doesn't happen again.

Strange: SD recognized only partially. Lenovo A820

Hello world!
A very strange issue have just happen with my Lenovo phone. The SD card suddenly became unrecognized, only by some of the apps. the card itself is OK (PC tested, and the problems occurs with any card), listed properly under "storage" menu, and accessible by files explorer. But, when i open the camera or photo gallery - i recieve the message that "no SD storage". The strangest fact is, thar on the background of this message in the gallery, it shows up thumbs of images stored in the card...
Phone's internal memory has been repartitioned with METEOS app, to disable internal SD and increase internal memory, but everything was fine a long time until now.
I tried to recover the initial state of the phone. Did full format by Flash-Tool, the loaded on it an official chinese stock-rom, in order to recover its initial internal memory partitioning.
Then I upgraded it to CWM recovery and my previous custom ROM (Lambda) and everithing was OK, even the SD was detected. But then, when I tried to make repartition with METEOS app (after which i had to modify the actual code lines in Void.fstab, as instructed after METEOS using), BOOM! again the is'nt recognized only by camera and galley!
What could have happen? everithing worked fine more than a year
Update:
I have found that, though the SD is mounted in vold.fstab to "Storage", in the mnt folder it is still listed under Storage2.
How could that be?

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