Unmounting usb disk impossible
Morten Bo Johansen
listmail at mbjnet.dk
Wed Jul 22 15:12:34 UTC 2020
I simply cannot unmount my usb disk. It is mounted by automount/autofs
on /media/da0s1. I try to unmount it like this
sudo umount -At autofs
but it replies with the error message
umount: unmount of /media failed: Device busy
I run lsof grepping for "/media" or "da0s1" both with and
without sudo. Nothing shows.
I got no terminals accessing the mount point, no zombie
processes or anything.
If the error message is really correct and some process is
actually accessing /media, how do I find it if lsof shows nothing?
Any other advice?
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