[Bug 1921003] Re: /etc/fstab has an invalid entry to EFI partition of installation medium after installation on BIOS/legacy system

[Jan Rathmann]

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

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Title:
  /etc/fstab has an invalid entry to EFI partition of installation
  medium after installation on BIOS/legacy system

Status in ubiquity package in Ubuntu:
  New

Bug description:
  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)

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