> On Tue, Sep 05, 2023 at 07:34:13PM +0200, Julian Andres Klode wrote: > I wrote > > If /boot/efi is not mounted I get for new versions > > Well that's *your problem*, sorry. Mounting /boot/efi is mandatory, > you can't just go unmount it. By the same argument unmounting /boot > (if a separate partition) yields an unbootable system too (eventually > once /boot on / becomes out of sync with actual boot partition grub > uses).
Hi, Julian, thanks for your reply. It was my understanding that grub-install did know how to find and use the efi partition if not mounted, seems I was wrong. But for some reason this problem did not show up in previous version, see below. El mar, 5 sept 2023 a las 21:40, Julian Andres Klode (<julian.kl...@canonical.com>) escribió: > I wrote > > $ LC_ALL=C sudo dpkg-reconfigure grub-efi-amd64 > > Installing for x86_64-efi platform. > > grub-install: error: cannot find EFI directory. > > Failed: grub-install --target=x86_64-efi --force-extra-removable > > WARNING: Bootloader is not properly installed, system may not be bootable > > Generating grub configuration file ... > > > > (same without --force-extra-removable). No such error with previous version. > > Also, that's not true. grub-install for EFI of course always > requires /boot/efi present, always has and always will* > > * on Ubuntu we mount to /var/lib/grub/esp if /boot/efi is not > mounted (or you have multiple ESPs configured), but the script > isn't in Debian yet, it's a bit hacky and duplicates lots of postinst > sightly different :( I am rechecking 2.06-13 in a different efi box that was installed as efi from the beginning (previous one was not). Although /boot/efi is not mounted, error in grub-efi-amd64 configuration does not happen (this does not mean that installation is fully OK, just that error does not happen and grub is bootable). I do not remember to have changed /etc/fstab to set noauto instead of defaults in that entry, but this happened some years ago and sincerely, cannot be sure. $ dpkg -l 'grub*' | grep ^i ii grub-common 2.06-13 amd64 GRand Unified Bootloader (common files) ii grub-efi-amd64 2.06-13 amd64 GRand Unified Bootloader, version 2 (EFI-AMD64 version) ii grub-efi-amd64-bin 2.06-13 amd64 GRand Unified Bootloader, version 2 (EFI-AMD64 modules) ii grub-efi-amd64-signed 1+2.06+13 amd64 GRand Unified Bootloader, version 2 (amd64 UEFI signed by Debian) ii grub2-common 2.06-13 amd64 GRand Unified Bootloader (common files for version 2) $ grep /boot/efi /etc/fstab # /boot/efi was on /dev/nvme0n1p1 during installation UUID=5451-8D5D /boot/efi vfat umask=0077,noauto 0 1 $ mount | grep -i efi efivarfs on /sys/firmware/efi/efivars type efivarfs (rw,nosuid,nodev,noexec,relatime) $ LC_ALL=C sudo apt-get install --reinstall grub-efi-amd64 Reading package lists... Done Building dependency tree... Done Reading state information... Done 0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded. Need to get 0 B/45.7 kB of archives. After this operation, 0 B of additional disk space will be used. Preconfiguring packages ... (Reading database ... 546089 files and directories currently installed.) Preparing to unpack .../grub-efi-amd64_2.06-13_amd64.deb ... Unpacking grub-efi-amd64 (2.06-13) over (2.06-13) ... Setting up grub-efi-amd64 (2.06-13) ... Generating grub configuration file ... Found background image: .background_cache.png Found linux image: /boot/vmlinuz-6.3.0-1-amd64 Found initrd image: /boot/initrd.img-6.3.0-1-amd64 Found linux image: /boot/vmlinuz-6.1.0-9-amd64 Found initrd image: /boot/initrd.img-6.1.0-9-amd64 Warning: os-prober will be executed to detect other bootable partitions. Its output will be used to detect bootable binaries on them and create new boot entries. Found Windows Boot Manager on /dev/nvme0n1p1@/efi/Microsoft/Boot/bootmgfw.efi Adding boot menu entry for UEFI Firmware Settings ... done Processing triggers for shim-signed:amd64 (1.39+15.7-1) ... Regards, -- Agustin
