[Bug 2033256] Re: Grub 2.12~rc1-4ubuntu2 with ZFS will not list any boot entries

[Launchpad Bug Tracker]

This bug was fixed in the package grub2 - 2.12~rc1-4ubuntu3

---------------
grub2 (2.12~rc1-4ubuntu3) mantic; urgency=medium

  * zfs: Drop `set -u`, incompatible with undefined variables in library
    (LP: #2033256)

 -- Julian Andres Klode <juliank at ubuntu.com>  Tue, 29 Aug 2023 16:03:49
+0200

** Changed in: grub2 (Ubuntu Mantic)
       Status: Fix Committed => Fix Released

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Title:
  Grub 2.12~rc1-4ubuntu2 with ZFS will not list any boot entries

Status in grub2 package in Ubuntu:
  Fix Released
Status in grub2 source package in Mantic:
  Fix Released

Bug description:
  After upgrading to the new grub the boot menu only contains the
  memtest86 entries.

  It can be easily reproduced by installing the system with ZFS (either
  plain ZFS or with encryption) using the latest desktop legacy image
  https://cdimage.ubuntu.com/daily-legacy/current/. After installation
  the system will boot straight into memtest86 (because that's the only
  thing in the menu).


  For people facing the same issue, you can boot your system manually
  from grub with this:

  set root=(hd0,gptX)
  linux /BOOT/ubuntu_nedhsb/@/vmlinuz root=ZFS=rpool/ROOT/ubuntu_nedhsb boot=zfs
  initrd /BOOT/ubuntu_nedhsb/@/initrd.img
  boot

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