I've now downloaded 3 separate formatting programs, including one to perform a low-level format, and not one of the formats has been successful. I even tried formatting the drive to FAT 32 on a Mac OS to no avail. I can still access every single file that was previously put on the drive, no problem. I've tried deleting all the non-corrupted data to isolate the problem areas, but every time I format after deleting, the files I deleted return.
It's a very strange corruption to say the least. The card has gone through absolutely no physical trauma.
Any assistance or suggestions would be appreciated. And no, the card is not locked .
EDIT: Using the chkdsk function gives me the error "First allocation unit not valid" if that helps.
Edited by GraysonH, 26 August 2010 - 12:58 AM.