udefrag §

Defragment NTFS devices.

sudo unmount /dev/sdc1
udefrag --analyze /dev/sdc1
udefrag --defragment /dev/sdc1
udefrag --optimize /dev/sdc1 ## very slow

Test file fragmentation §

Zalman IODD only supports emulating ISO files with < 24 fragments.

sudo filefrag FILE