[Bug 1845289] Re: Grub EFI amd64 no longer start EFI/Microsoft/Boot/bootmgfw.efi
Ivan Larionov
1845289 at bugs.launchpad.net
Tue Oct 22 02:55:34 UTC 2019
For the sake of testing I've updated to the latest grub from 19.10
(2.04-1ubuntu12) and I can't boot Windows anymore. My exact steps were:
0. Ubuntu 19.10 with grub from 19.04. Everything works
1. Move /etc/grub.d/07_os-prober back to /etc/grub.d/30_os-prober to rule this change out
2. sudo apt update && sudo apt dist-upgrade
3. sudo grub-install /dev/sda
4. sudo update-grub
5. Reboot
6. Can't boot Windows anymore
I've compared grub config from 2.02 to 2.04. They look almost exactly
the same. The only differences are:
- set vt_handoff=vt.handoff=1
+ set vt_handoff=vt.handoff=7
and
+### BEGIN /etc/grub.d/10_linux_zfs ###
+### END /etc/grub.d/10_linux_zfs ###
Windows part config:
menuentry 'Windows Boot Manager (on /dev/sda1)' --class windows --class os $menuentry_id_option 'osprober-efi-CAC2-FF0C' {
insmod part_gpt
insmod fat
set root='hd0,gpt1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1 CAC2-FF0C
else
search --no-floppy --fs-uuid --set=root CAC2-FF0C
fi
chainloader /EFI/Microsoft/Boot/bootmgfw.efi
}
I've recorded video of boot process with "set debug=all" grub config.
Send me a message through https://launchpad.net/~xeron-
oskom/+contactuser if you want to see it.
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https://bugs.launchpad.net/bugs/1845289
Title:
Grub EFI amd64 no longer start EFI/Microsoft/Boot/bootmgfw.efi
Status in grub2 package in Ubuntu:
Incomplete
Status in grub2 source package in Eoan:
Confirmed
Bug description:
On a dual boot computer with Windows 10 Pro and Ubuntu 19.10, since a
month, Grub was unable to boot Windows 10. Hitting the Windows entry
line give me a 0.1s black screen and get me back to Grub Menu.
sudo update-grub give me :
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/init-select.cfg'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-5.3.0-10-generic
Found initrd image: /boot/initrd.img-5.3.0-10-generic
Found Windows Boot Manager on /dev/sda1@/EFI/Microsoft/Boot/bootmgfw.efi
Adding boot menu entry for EFI firmware configuration
done
ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: grub-efi-amd64 2.04-1ubuntu5
ProcVersionSignature: Ubuntu 5.3.0-10.11-generic 5.3.0-rc8
Uname: Linux 5.3.0-10-generic x86_64
ApportVersion: 2.20.11-0ubuntu7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Wed Sep 25 08:01:05 2019
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=fr_FR.UTF-8
SHELL=/bin/bash
SourcePackage: grub2
UpgradeStatus: Upgraded to eoan on 2018-11-14 (314 days ago)
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