Hint and kinks: Difference between revisions

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==unmounting a USB disk==
Sometimes a user has cd'ed to a USB disk in some window (shell)
and then if someone else tries
to unmount the disk they will get a message like this:
  umount: /media/120514a: umount failed: Operation not permitted
The solution is to find the offending process and kill it ''cold''.
If the disk is labeled '120514a', then the steps are:
  lsof | grep 120514a
you might see something like this
  bash      8367      dgs  cwd      DIR      8,49    20480  61341743 /media/120514a/user/cs
you can now kill this offending process as
  kill -9 8367
and then you can do
  umount /media/120514a

Latest revision as of 15:32, September 20, 2021