Root [CDMA] corrupt .mp4 files causing SD card unexpectedly removed error?

[AndroidMax]

So something is corrupting my .mp4 files and causing the "SD card unexpectedly removed" error. The phone is rooted with cleanrom 2.9.5 and I want to back up the SD card and flush it before I install 4.0. Any ideas?

Thanks!

 

[EarlyMon]

Only thing that I can think of would be to mount the sd card directly on a PC using one of those USB-SDcard adapters - they're not expensive and very handy.

Then do a low-level format and zero out the storage using this tool to make sure you've gotten rid of all of the bad bits -

https://www.sdcard.org/downloads/formatter_3/

It will take a while, but that tends to save a lot of cards.