Public bug reported:
Lubuntu 19.04
grub-install from grub2-common 2.02+dfsg1-12ubuntu2
Summary:
The lubuntu installer puts the EFI in EFI/ubuntu. The firmware appears
to be hard coded to this path. Lubuntu grub-install puts the EFI in
EFI/lubuntu only, and NOT in EFI/ubuntu, which can result in an
unbootable state (grub prompt).
Detail:
Long time debian, new lubuntu user. After a fresh install of lubuntu
from usb:
$ efibootmgr
BootCurrent: 0003
Timeout: 0 seconds
BootOrder: 0003,0002,0000,0001,2001,2002,2003
Boot0000* Windows Boot Manager
Boot0001* Linpus lite
Boot0002* debian
Boot0003* ubuntu
Boot2001* EFI USB Device
Boot2002* EFI DVD/CDROM
Boot2003* EFI Network
$ sudo update-grub
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/init-select.cfg'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-5.0.0-17-generic
Found initrd image: /boot/initrd.img-5.0.0-17-generic
Found linux image: /boot/vmlinuz-5.0.0-13-generic
Found initrd image: /boot/initrd.img-5.0.0-13-generic
Found Windows Boot Manager on /dev/nvme0n1p1@/EFI/Microsoft/Boot/bootmgfw.efi
Found Debian GNU/Linux 9 (stretch) on /dev/nvme0n1p5
Adding boot menu entry for EFI firmware configuration
done
$ ls /boot/efi/EFI/
Boot debian Microsoft ubuntu
$ sudo grub-install
Installing for x86_64-efi platform.
Installation finished. No error reported.
$ ls /boot/efi/EFI/
Boot debian lubuntu Microsoft ubuntu
#### It installs only to lubuntu and NOT also to ubuntu. See comments
below.
$ efibootmgr
BootCurrent: 0003
Timeout: 0 seconds
BootOrder: 0004,0003,0002,0000,0001,2001,2002,2003
Boot0000* Windows Boot Manager
Boot0001* Linpus lite
Boot0002* debian
Boot0003* ubuntu
Boot0004* lubuntu
Boot2001* EFI USB Device
Boot2002* EFI DVD/CDROM
Boot2003* EFI Network
$ strings /boot/efi/EFI/ubuntu/* |egrep EFI/l?ubuntu
/EFI/ubuntu
$ strings /boot/efi/EFI/lubuntu/* |egrep EFI/l?ubuntu
/EFI/ubuntu
I discovered this when I moved my lubuntu partition to another drive and tried
to get grub to reinstall. I also deleted unnecessary EFIs (ubuntu and later
both). I only figured out the problem after reinstalling Lubuntu from scratch
and observing the state of the EFI partition after install.
If the ubuntu folder is removed (and possibly requiring a partion id
change but not likely), attempting to boot lubuntu will go to a grub
prompt.
`set` revealed:
`root=(hd1,gpt1)` (my EFI partition)
`prefix=(hd1,gpt1)/EFI/ubuntu` (had been deleted, and grub-install did not put
it back)
Lubuntu could be booted with the following commands, where hd1,
partition 7 is the new root:
```
set root=(hd1,gpt7)
set prefix=(hd1,gpt7)/boot/grub
insmod normal
normal
```
No amount of running `update-grub`, and `grub-install`, creating custom
grub entries, or running grub from debian or a rescue disk mattered. The
only thing that fixed it was reinstalling as that's the only thing that
put the EFI/ubuntu folder back. I probably could have just manually
renamed the directory in EFI from lubuntu to ubuntu.
** Affects: grub2 (Ubuntu)
Importance: Undecided
Status: New
** Tags: grub grub-install grub2-common lubuntu
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https://bugs.launchpad.net/bugs/1833490
Title:
lubuntu grub-install puts efi in the wrong directory
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