How to change the keyboard layout for encryption passphrase entry?

[phlibi]

Hi everyone,

some searching around brought me nowhere, so I finally ask here: How can I select the keyboard layout that is used when I have to enter the encryption passphrase for the zpool? It seems to default to US English, which is certainly a reasonable default, but it would simplify typing for me if I could change that.
In case there is actually no configuration option in the prebuilt image for this, then what would be the easiest way to configure it in a custom image?

Thanks!

Best regards,
Philipp

[classabbyamp]

rd.vconsole.keymap=... in zfsbootmenu's cmdline should work

[phlibi]

That was quick, thanks! Can I pass this command line somehow in efibootmgr when using the stock bundled EFI image of ZFSBootMenu? Or do I need to use the separate loader and initrd to do this or build a custom image? I'm not really used to dealing with EFI boot entries yet, having used Grub all the time before. I see there is a --unicode option in efibootmgr to "pass extra args", but I don't know if these are of any use with the bundled image.

[classabbyamp]

not all efi firmwares support that. the zfsbootmenu efi has an embedded commandline in it that you can edit with the zbm-kcl script

[phlibi]

Perfect, thanks! Works like a charm. As reference for future readers, here's what I did:

$ wget https://raw.githubusercontent.com/zbm-dev/zfsbootmenu/master/bin/zbm-kcl
$ sudo bash zbm-kcl -a rd.vconsole.keymap=de_CH-latin1 /boot/efi/EFI/ZBM/VMLINUZ.EFI