USB Issues: Exit code 21 kills mounts - how do you diskcheck flash?
I am a tech-newbie with two problems ongoing with my Mint 9 USB install on a 8gig flash drive. Iíve successfully installed it and used it twice on two machines, however after five or six times, two things have happened: One machine no longer sees it on its boot list at all no manner how many time I reboot it, and with the other the flash drive now only signals:
Unable to mount 60 GB Filesystem
Error mounting: mount exited with exit code 21: mount: according to mtab, /dev/sda1 is already mounted on /media/E8701CFA701CD0E4
I have scoured Google for remedies with exit code 21 and how it supposedly means the HD has pre-mounted somehow and such, and everyone has ultra-techie explanations that go over this newbieís head. I donít expect to get a spot on solution, but just a general way to go would be really helpful!
Also, Iíd like to learn to perform a FSCK and CHECKDISK on my flash drive, but Google entries say never do this without unmounting the drive first -- but donít explain how!
Any hints or recommendations would be most appreciated!
Jim in NYC