Sometimes, when you try to unmount a disk you get an error “Cannot umount volume. An application is preventing the volume ‘…….’ from being umounted.”
For this test, I open a mp3 file then I try to unmount the disk.
taufanlubis@toshiba:/media$ sudo umount Maxtor/
umount: /media/Maxtor: device is busy
umount: /media/Maxtor: device is busy [...]
