Unable to install Xubuntu 20.10 on legacy desktop

[Joel Carlson]

Made 1023mb ext4 boot partition and main ext4 partition. Install aborted toward end.

ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: ubiquity 20.10.9
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu44
Architecture: amd64
CasperMD5CheckResult: skip
CasperVersion: 1.452
Date: Sun Aug 9 19:55:40 2020
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/xubuntu.seed maybe-ubiquity quiet splash ---
LiveMediaBuild: Xubuntu 20.10 "Groovy Gorilla" - Alpha amd64 (20200809)
ProcEnviron:
 LANGUAGE=en_US.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 LC_NUMERIC=C.UTF-8
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Chris Guiver (guiverc)]

Possibly related to https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1891324

[Derk Willem te Bokkel (dtebokkel)]

discovered during a manual partitioning install ..

found that fstab had an entry for /boot/efi mount vfat type pointed to the /dev/sdb2 efi partition of the install media (USB)

deleted the fstab entry..

also deleted the mount point /boot/efi as no EFI partition existed on an MBR based system (being rebuilt)

could then boot the system .. ( grub was installed/reinstalled .. dual boot system )

[Chris Guiver (guiverc)]

Thank you for reporting this bug to Ubuntu.

Ubuntu 20.10 (groovy) reached end-of-life on July 22, 2021.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in.

[Launchpad Janitor (janitor)]

[Expired for grub-installer (Ubuntu) because there has been no activity for 60 days.]