improper shutdown - root unionfs and power off

[krishna.murphy]

I found the problem but not a fix. Somewhere in /etc/init.d/knoppix-halt, after the modules are freed, the process ntfs-3g is still around. Everything is still ok here.

But right after /bin/umount -t ....., the ntfs-3g is gone and /mnt-system is no more mounted, but /KNOPPIX-DATA is still mounted, ie the NTFS is umount properly but not knoppix-data.img. It will cause corruption to knoppix-data.img.

Looks like having knoppix-data.img hosted on NTFS is not a supported configuration.

I think that's some pretty good detective work! For some unknown reason, with your hardware, the shutdown script isn't working quite properly when dealing with NTFS. I wonder if it might have something to do with sound, as playing the shutdown sound gives running programs more time to halt; do you have sound? I do, and as I stated previously, my NTFS (used on the HD, not on the flash) unmounts cleanly.

Cheers!
Krishna