I have just had an IBM 1GB MicroDrive go south on me during a session.
According to the frame counter on my D60, I had only 3 exposures left. I know I hadn't taken that many pictures even though I was shooting RAW mode. I turned the camera off, waited several seconds and removed the drive. Yep, it's a 1 gig. I put it back in and received a CFerr message. So, I removed it, replaced it with a 340 MicroDrive and continued.
Upon returning to my office, I fired up a file recovery software program that seemed to recover the files. However, when trying to convert the files with Canon's RAW file converter 2, it didn't recognize the files. They're apparantly lost. So, I called IBM for help. They'll replace the drive, no problem. However, they suggested that after recovering my files try re-formatting the drive with my PC (not a MAC). Their claim is that these MicroDrives don't like the camera formatting system because they are not a true FAT16 system. The computer is. I reformatted using the computer and the drive seems to be working fine.
Any of you have similar experiences? What did you do? Were you able to recover your files? What about the formatting procedures. They suggest that formatting several times in-camera will cause problems at some point in time. Sure did!