On Fri, 19 Mar 2021 at 19:53, Alexander V. Makartsev <avbe...@gmail.com> wrote:

> To perform surface scans you can use SMART short and long scans, and also a 
> program called "badblocks" from the package "e2fsprogs".
> Be sure to unmount "/dev/sda1" before performing the scans.

Hi, I wonder why you give this advice to unmount.
Are you aware of a smartmontools reference document
that gives this advice?

If not using captive mode --captive option then
I feel it is unnecessary.

If using captive mode then I would suggest to unmount
the entire drive, not just one partition.

This is my casual understanding, corrections with
authoritative sources are welcome.

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