GRUB

Pages

Multiboot USB Stick

You are not allowed to add pages

ISO Image on Harddisk

menuentry "custom.cfg: debian-live-12.5.0-amd64-lxde.iso" {
        insmod part_gpt
        insmod ext2
        search --no-floppy --fs-uuid --set=root 8e1fa52e-49de-49f4-b55a-2e261d27891b
        loopback loop /boot/iso/debian-live-12.5.0-amd64-lxde.iso
        linux (loop)/live/vmlinuz boot=live findiso=/boot/iso/debian-live-12.5.0-amd64-lxde.iso
        initrd (loop)/live/initrd.img
}

Use config file of other installation on GPT disk

custom.cfg

menuentry 'custom.cfg: /boot/grub/grub.cfg on /dev/sda5 [ a66894b3-dc45-48fc-82c8-04dfdc8d9ff3 ]' {
        insmod part_gpt
        insmod ext2
        search --no-floppy --fs-uuid --set=root a66894b3-dc45-48fc-82c8-04dfdc8d9ff3
        configfile /boot/grub/grub.cfg
}
menuentry 'custom.cfg: /boot/grub/grub.cfg on /dev/sda5 [ --label 'MyLabel' --hint hd0,gpt5 ]' {
        insmod part_gpt
        insmod ext2
        search --no-floppy --set=root --label 'MyLabel' --hint hd0,gpt5
        configfile /boot/grub/grub.cfg
}
menuentry 'custom.cfg: /boot/grub/grub.cfg on /dev/sda5 [ set root=(hd0,gpt5) ]' {
        insmod part_gpt
        insmod ext2
        set root=(hd0,gpt5)
        configfile /boot/grub/grub.cfg
}