System Update froze - UbuntuMATE 16-04

[Sarunas Burdulis]

On 2018-06-21 16:27, Bret Busby wrote:
> On 22/06/2018, Colin Law <clanlaw at gmail.com> wrote:
...
>> You can try unmounting the disc using
>> sudo umount /dev/sdb
>> If that completes then the system should recover, but I suspect it
>> will not complete because the disc is not operating correctly.  In
>> which case as far as I can see your only option is to unplug it.  In
>> fact if is malfunctioning it may be that the longer you leave it
>> connected with the system trying to access it the more likely it is
>> that it will fail completely and lose all your data, so the safest
>> thing may be to unplug it.
>>
>> Colin
> "
> root at bret-Inspiron-580-UbuntuMATE:/home/bret# umount /dev/sdb1
> umount: /media/bret/hp hard drive1: target is busy
>         (In some cases useful info about processes that
>          use the device is found by lsof(8) or fuser(1).)

How about:

umount -l /dev/sdb1

From umount manual:

-l, --lazy   Lazy unmount.  Detach the filesystem from the file
hierarchy now, and clean up all references to this filesystem as soon as
it is not busy anymore.


-- 
Sarunas Burdulis
Systems Administrator, Dartmouth Mathematics
math.dartmouth.edu/~sarunas

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