System Update froze - UbuntuMATE 16-04

[Colin Law]

On 21 June 2018 at 16:46, Bret Busby <bret.busby at gmail.com> wrote:

> ...
> So, this "feature" that was apparently included in 16.04.2, in all of
> the circumstances, probably, instead of changing Ubuntu 16.04 to the
> status of Debian sid, appears to have turned Ubuntu 16.04 and 18.04,
> into the nature of Debian experimental, with all data at risk.

It is the disc causing the update to hang, not the update causing the
disc problem.
It is almost certainly a faulty disk.  What happens if you unmount it,
or if you can't then just unplug it?

Colin