/etc/fstab has an invalid entry to EFI partition of installation medium after installation on BIOS/legacy system with "ubiquity -b"

[Jan Rathmann]

Hello,

if I do a test installation of Kubuntu current daily image on my machine, the installed system fails to boot because of a wrong entry in /etc/fstab:

# /boot/efi was on /dev/sdd2 during installation
UUID=8066-B6E7 /boot/efi vfat umask=0077 0 1

The entry seems to point to the EFI partition of the installation medium (which is removed/ejected after installation). Simply removing this entry makes the new installed system boot up fine.

What seems interesting to me is that the machine I'm using and where I did the testing doesn't support UEFI at all (BIOS only).

I started the installer with 'ubiquity -b' to avoid installing GRUB (I prefer using GRUB from my main installation).

Kind regards, Jan

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: ubiquity (not installed)
ProcVersionSignature: Ubuntu 5.11.0-11.12-generic 5.11.0
Uname: Linux 5.11.0-11-generic x86_64
ApportVersion: 2.20.11-0ubuntu60
Architecture: amd64
CurrentDesktop: KDE
Date: Tue Mar 23 20:57:54 2021
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/kubuntu.seed maybe-ubiquity quiet splash ---
InstallationDate: Installed on 2021-03-23 (0 days ago)
InstallationMedia: Kubuntu 21.04 "Hirsute Hippo" - Alpha amd64 (20210323)
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1921003

[Jan Rathmann (kaiserclaudius)]

Can also reproduce with current Ubuntu Hirsute daily image (beside Kubuntu).

[Brian Murray (brian-murray)]

When you reproduced it with the Ubuntu daily image were you also using the "-b" switch with ubiquity?

[Jan Rathmann (kaiserclaudius)]

Yes. Otherwise I run into bug #1893964 and the installation process is
aborted before the end.

Am 30.03.21 um 23:52 schrieb Brian Murray:
> When you reproduced it with the Ubuntu daily image were you also using
> the "-b" switch with ubiquity?
>
> ** Summary changed:
>
> - /etc/fstab has an invalid entry to EFI partition of installation medium after installation on BIOS/legacy system
> + /etc/fstab has an invalid entry to EFI partition of installation medium after installation on BIOS/legacy system with "ubiquity -b"
>