Unix Tip #4540- August 16, 2017


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UMOUNT BUSY DEVICES


The "umount" command unmounts a currently
mounted filesystem, which can be specified either
as a mounted-on directory or a filesystem.

If a mount point is busy, there are a couple
things to try:

On some non-BSD based machines you can use the
command "umount -k" to force the system to drop a
busy device.

# umount -k /hosts/foo

If you are on a standalone system or none of the
filesystems are being exported, then "cd /" in
all open shells or windows and umount.


NOTE: All tips provided are USE AT YOUR OWN RISK. Tips are submitted by various unix admins around the globe. UGU suggest you read and test each tip in a non-volitile environment before placing into production.


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