force unmount on mac os

Sometimes you need to unmount a device e.g. a SSHFS mounted volume. The server goes offline or you don’t have access to it anymore.

I will explain on the procedure on the sample device “foobar”.

 

Check your mount points:

# mount
/dev/disk0s2 on / (hfs, local, journaled)
devfs on /dev (devfs, local, nobrowse)
map -hosts on /net (autofs, nosuid, automounted, nobrowse)
map auto_home on /home (autofs, automounted, nobrowse)
foobar@192.168.1.1:/media on /Users/myuser/mnt (osxfusefs, nodev, nosuid, synchronous, mounted by foobar)

To get rid of the mount as a user with admin rights

sudo umount -f

if this does not work out try:

sudo diskutil umount force /Volumes/FooBar

 

If your user does not have admin privileges get a shell with admin rights and execute the commands above:

su - <adminuser>
password:

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