GNU bug report logs - #47780
[installer] Trying to install to DVD leads to crash

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From: Ludovic Courtès <ludo <at> gnu.org>
To: Mathieu Othacehe <othacehe <at> gnu.org>
Cc: 47780-done <at> debbugs.gnu.org
Subject: bug#47780: [installer] Trying to install to DVD leads to crash
Date: Sun, 20 Jun 2021 22:55:09 +0200

Hi,

Mathieu Othacehe <othacehe <at> gnu.org> skribis:

>> Does Parted provide a way to tell whether a storage device is read-only?
>> That would be ideal.
>
> Yes it does, but this is not enough for a reliable installation device
> detection. In Qemu the installation device is /dev/sr0 that is
> reported as read-only by parted.
>
> Using real hardware, and an installation device on an USB drive, the
> installation device is /dev/sd* and is not reported as read-only by
> parted.

I see.

> However, I found a better way to detect the installation device, that
> relies on reading the root partition UUID from the command line.
>
> I combined the read-only parted method and the UUID based installation
> device detection in e12be802e02b3345a753e7ec1287852a7337a0a5. This seems
> to work well for all my machines, plus for your VM use case.

That’s clever.  Thanks!

Ludo’.

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