How in the world did my Debian install with basically nothing in grub? Maybe reinstalling all of grub will populate stuff?
Yeah, this is just baffling.
Like grub exists and the main config file exists and grub appears on boot and functions but there is absolutely nothing inside of grub.d and after creating my own 40_custom file and runningupdate-grub nothing happens.
@adiz
Shouldn't there be something like "dpkg-reconfigure -f" to force it recreating the default config files? I don't remember much about Debian, but I think it's something like that.
@m0xee@social.librem.one I'll have to check into that. I have Debian and Haiku dual-booting on my miniPC without issue. This is a fresh install of Debian on this laptop, so nothing funky should have been done with it.
@adiz Dunno, maybe Haiku messed up the EFI partition on primary disk, but empty grub.d looks wrong anyway 🤷
@m0xee@social.librem.one Nah, I know it didn't do that. Everything works just fine, only can't get grub setup to provide Haiku as an additional boot option. Assuming it has something to do with all of grub.d missing.
@adiz Oh, that!
I think it doesn't scan for other operating systems by default now, you have to set GRUB_DISABLE_OS_PROBER=false in /etc/default/grub to force it.
Here: https://wiki.archlinux.org/title/GRUB#Detecting_other_operating_systems
It's about Arch, but it's exactly the same in Void and I'm pretty sure, in Debian too.
@m0xee@social.librem.one No, I've got that setup, but it's irrelevant because Haiku doesn't ship with its own EFI setup that allows grub to detect it with os-prober. So, you have to create a folder in boot/efi on the UEFI partition for Haiku with Haiku's own bootloader placed inside there, then you create a manual entry inside 40_custom of grub.d that points to the directory on the UUID of the UEFI partition and then run update-grub. I've done it before and it works, just not on this newest Debian installation on the X230.
https://www.haiku-os.org/guides/uefi_booting
https://www.haiku-os.org/guides/booting/