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How do I forcefully unmount a Linux disk partition?

Dec 04, 2015, 08:00 (1 Talkback[s])
(Other stories by Anonymous)

Sometimes you try to unmount a disk partition or mounted CD/DVD disk or device, which is accessed by other users, then you will get an error "umount: /xxx: device is busy". However, Linux or FreeBSD comes with the fuser command to kill forcefully mounted partition. For example, you can kill all processes accessing the file system mounted at /nas01 using the fuser command.

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