Fix Grub-Customizer ARCH entries for multibooters [Solved]

[1-DOT.C0M]

I always keep a few Linux distros installed on a 11+ year old Lenovo notebook. That currently includes MX 21 Fluxbox, MXDE 21, KDE Neon 221023, and two Arch-based distros, CachyOS KDE (based on ArcoLinux) and MaBox (Manjaro Openbox). All use the EXT4 file system.

The ancient Grub Customizer utility using OS-Prober previously generated a nice Grub boot menu using a modified StylishDark_mx theme. When I run Grub Customizer from CachyOS, it still generates a fully functional Grub boot menu. However, if I now run Grub Customizer using MX 21 Fluxbox, both Arch-based distos will fail upon bootup with a KERNEL PANIC message.

I suspect that this has something to do with the Arch community's recent problems with GRUB.

From MX Fluxbox Grub-Customizer, I edited the original CachyOS entry shown below:

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insmod part_msdos
insmod ext2
set root='hd0,msdos8'
if [ x$feature_platform_search_hint = xy ]; then
  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos8 --hint-efi=hd0,msdos8 --hint-baremetal=ahci0,msdos8  2e479209-d086-4167-a100-b463c6e24d63
else
  search --no-floppy --fs-uuid --set=root 2e479209-d086-4167-a100-b463c6e24d63
fi
linux /boot/vmlinuz-linux-cachyos root=UUID=2e479209-d086-4167-a100-b463c6e24d63 rw quiet
initrd /boot/intel-ucode.img^/boot/amd-ucode.img^/boot/initramfs-linux-cachyos.img

The problem is the LAST LINE. To fix it, replace the ^ characters with spaces.

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initrd /boot/intel-ucode.img /boot/amd-ucode.img /boot/initramfs-linux-cachyos.img

This tries 3 img files until it finds one that works. For my old Lenovo, only the last one works. So, for me, the following is quicker/better.

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initrd /boot/initramfs-linux-cachyos.img

I made the same fix editing the MaBox Linux entry. Both now boot correctly.

[fehlix]

I suspect that this has something to do with the Arch community's recent problems with GRUB.

From MX Fluxbox Grub-Customizer, I edited the original CachyOS entry shown below:

Code: Select all

initrd /boot/intel-ucode.img^/boot/amd-ucode.img^/boot/initramfs-linux-cachyos.img

Actually, MX ships with some adjustments to make µcode-initrd entries show up properly for Arch-based distributions.
At least tests with Manjaro have shown to generate GRUB menu entries properly.
Would you mind showing this listing:

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ls -l /etc/grub.d/*

It may be a simple fix, just to copy one file into the right position, in case you have replaced MX provided versions with Debian's version during last GRUB packages upgrade.
Otherwise a next GRUB menu rebuild e.g. during kernel upgrade or driver upgrade will overwrite your manually changes.