Hello
one extra I need to add to this. I did grub-install with local install of
grub compiled locally which is described in this thread. It works with
grubx64.efi in EFI partition. However, same thing does not work with encrypted
boot partition. Below is error:
/home/<userid>/grub/install/sbin/grub-install -d
/home/<usreid>/grub/install/lib/grub/x86_64-efi --bootloader-id=ubuntu1
Installing for x86_64-efi platform.
/home/<userid>/grub/install/sbin/grub-install: error: disk `lvm/boot_crypt1'
not found.
I have fstab entry for this partition.
However, with plain partition for boot, it works wth grubx64.efi in efi
partition installed.
Regards
Anand
________________________________
From: anand akhare
Sent: 16 June 2024 23:15
To: help-grub@gnu.org <help-grub@gnu.org>
Subject: grub 2.12 compile and install - location of binaries or how to
generate and cryptomount issue on ubuntu 22.04
Hello,
I have ubuntu 22.04 with grub 2.06. I wanted to compile grub 2.12 and get
it on ubuntu. Reason is I want to encrypt boot partition and cryptomount is not
able to detect boot partition which is luks1 which is with default apt package
of ubuntu of grub. When I compiled, below configure command is used:
./configure --prefix=<instal_dir> --target=x86_64 --with-platform=efi
The installed ubuntu package grub is grub-efi-amd64-signed
With this in dir /usr/lib/grub has below entries
/usr/lib/grub$ ls
grub-mkconfig_lib grub-multi-install i386-pc x86_64-efi x86_64-efi-signed
Also, x86_64-efi directory has
/usr/lib/grub$ ls x86_64-efi/monolithic/
gcdx64.efi grubnetx64.efi grubx64.efi
I do not see multiple target platform dirs on compilation and installation of
2.12 in local directory as well as single grub executable grubx64.efi
~/grub/install$ ls lib/grub/x86_64-efi/*grub*
lib/grub/x86_64-efi/gdb_grub
~/grub/install$ ls -l lib/grub/x86_64-efi/* | grep "^d"
~/grub/install$
grub-mkconfig is found in install/share directory.
~/grub/install/share/grub$ ls
grub-mkconfig_lib
Where is grubx64.efi that will be installed in /boot/efi?
Also, /boot/efi/EFI/ubuntu has some more binaries
# ls /boot/efi/EFI/ubuntu/
BOOTX64.CSV grub.cfg grubx64.efi mmx64.efi shimx64.efi
When grub-install is triggered, from where do these binaries grub pick up?
Based on this query, I need to sign grub binary which I believe is grubx64.efi.
Pls clarify on this where can I get binaries of grub and which ones are
required to be signed?
I believe grub-install will pick up grub bootloader from lib/grub directory and
copy in efi. Pls correct me if mistaken.
Also, cryptomount problem if is evident in 2.06, pls clarify. Is it worth
effort to move to 2.12 grub to get encrypted boot with grub2.
cryptomount gives error that "no such cryptodisk" though it is detected in
ubuntu with disks utility.
Regards
Anand
