This is the sort of thing you don't want at 5 a.m. You're using your device and looking at pictures when it suddenly decides to stop recognizing your micro SD card and now shows only what's on the internal storage.
Yeah, my Alcatel device decided to do that. I had deleted 2 images off, and I was just looking around when it decided to do its own thing and blam. Settings said by not showing it there was no SD card. It decided on its own to unmount it. Yikes.
So I fully get up, get out a flashlight and open up the back, remove the battery, and then get at the card. Contacts are gold plated and clean. What the fudge. Put it back in and together, still not acknowledging the card.
This is NOT happening. Make the effort and turn on my Windows 7 desktop. Get out the Micro SD adapter. Make a backup directory. Insert card into the reader slot. Windows says there are errors and should it scan and fix? I say no, let's just see what's on there. And up pops the directory of the card. So yes, it still works.
Grab everything and drag to copy into the backup directory. And it goes well, except for one imgcache directory with an error. I tell it to skip it. No other read errors. But I notice while browsing in My Computer there are a few images not popping up a thumbnail and same with a few video files. The images won't load at all, the video files at least play. One looks like there's some bad data. Hhhrrmm...
I forget to scan it and pop it back into the Alcatel and boot it up. It once again sees the microSD card! And as expected, Gallery isn't fully populating all the image folders. So that may be that imgcache error. Stop Gallery, clear cache, delete application data. Let it rebuild its thumbnail database and it does. So it seems to be OK.
But I still made that backup of 3.7 gb of data and photos.