jacobpascual/openzfs-docs
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

GRUB menu need to be regenerated after kernel update

Browse Source 
Signed-off-by: Maurice Zhou <jasper@apvc.uk>
This commit is contained in:
Maurice Zhou
2021-08-04 00:04:42 +08:00
committed by George Melikov
parent bdb85fc137
commit 9261cfb4f5
5 changed files with 19 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
docs/Getting Started/Fedora/Root on ZFS/5-bootloader.rst
View File

@@ -103,15 +103,19 @@ Install GRUB
To support Secure Boot, GRUB has been heavily modified by Fedora,
namely:
- ``grub2-install`` is `disabled for UEFI <https://bugzilla.redhat.com/show_bug.cgi?id=1917213>`__
- Only a static, signed version of bootloader is copied to EFI system partition
- This signed bootloader does not have built-in support for either ZFS or LUKS containers
- This signed bootloader only loads configuration from ``/boot/efi/EFI/fedora/grub.cfg``
- ``grub2-install`` is `disabled for UEFI <https://bugzilla.redhat.com/show_bug.cgi?id=1917213>`__
- Only a static, signed version of bootloader is copied to EFI system partition
- This signed bootloader does not have built-in support for either ZFS or LUKS containers
- This signed bootloader only loads configuration from ``/boot/efi/EFI/fedora/grub.cfg``
Unrelated to Secure Boot, GRUB has also been modified to provide optional
support for `systemd bootloader specification (bls) <https://systemd.io/BOOT_LOADER_SPECIFICATION/>`__.
Currently ``blscfg.mod`` is incompatible with root on ZFS.
As bls is disabled, you will need to regenerate GRUB menu after each kernel upgrade.
Or else the new kernel will not be recognized and system will boot the old kernel
on reboot.
Also see `Fedora docs for GRUB
<https://docs.fedoraproject.org/en-US/fedora/rawhide/system-administrators-guide/kernel-module-driver-configuration/Working_with_the_GRUB_2_Boot_Loader/>`__.