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Bug#1040899: debian-cd: "Failed to mount /target/proc" during GRUB installation

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Gioele Barabucci

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Jul 12, 2023, 3:40:06 AM7/12/23
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Package: debian-cd
Severity: important

Hi,

installing Debian 13 testing using today's image [1] always fails at the
boot loader installation stage with the error "Failed to mount
/target/proc". After this message is shown, GRUB is left uninstalled and
it is not possible the boot the system.

Running `mount` in a shell shows that /target/proc is already mounted.

This error occurs regardless of the installation method (tested with
graphical, tui, expert install).

Choices: All default answers except:

* Language: C
* Zone: Europe/Germany
* Software selection: SSH server + standard sys utils

[1]
https://cdimage.debian.org/cdimage/daily-builds/daily/20230712-1/amd64/iso-cd/debian-testing-amd64-netinst.iso

--
Gioele Barabucci

Roland Clobus

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Jul 12, 2023, 4:10:05 AM7/12/23
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Control: affects 1039710 debian-cd

On 12/07/2023 09:26, Gioele Barabucci wrote:
> installing Debian 13 testing using today's image [1] always fails at the
> boot loader installation stage with the error "Failed to mount
> /target/proc". After this message is shown, GRUB is left uninstalled and
> it is not possible the boot the system.

This was also reported in #1039710, but diagnosis is hindered by an
empty syslog which needs to be resolved first.

With kind regards,
Roland Clobus
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arizona.rover

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Jul 19, 2023, 5:00:05 AM7/19/23
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syslog reactivated using instructions from #1039710

Jul 19 08:24:08 main-menu[256]: INFO: Menu item 'grub-installer' selected
Jul 19 08:24:08 Success mounting /target/proc
Jul 19 08:24:08 Success mounting /target/sys
Jul 19 08:24:09 error: Error creating /target/sys/firmware/efi/efivars
Jul 19 08:24:49 (process:5127): mkdir: can't create directory '/target/sys/firmware/efi': Operation not permitted
Jul 19 08:24:49 main-menu[256]: WARNING **: Configuring 'grub-installer' failed with error code 1
Jul 19 08:24:49 main-menu[256]: WARNING **: Menu item 'grub-installer' failed
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