Multigrub

Multi ISO boot with grub

Partitioning the usb drive

GPT partition table:

• fat32 1gb
• ext4 remaining

Install GRUB2 on the usb drive

1. Mount the (fat32) efi partition of the usb drive to /mnt
2. Run grub-install --force --removable --target=x86_64-efi --boot-directory=/mnt/boot --efi-directory=/mnt /dev/sdX (replace /dev/sdX with the path of the usb drive)

Setup the Script

1. Copy update.sh to the ext4 partition
2. EFI-partition-id with the uuid of the (fat32) efi partition of the usb drive
3. Copy iso files to the ext4 partition
4. Run sudo ./update.sh while in the ext4 partition (rerun this when changing the iso files)

Additional Info

This script was tested with debian live images and manjaro live images