08-06-2020, 07:40 PM
This is not multiboot. This is an external USB HDD. I plug it into a shut down PC and when the PC boots, it uses the bootloader of the drive the BIOS has set to boot 1st. As I have set the USB drive 1st to boot it should boot into linux if it can find Grub. The rest of the drive is NTFS and is used for storage and has no other bootloader. When I try this again, I will put it on /dev/sdb2 which is the EXT4 partition I set up for linux and contains the other EXT4 partitions.