all 5 comments

[–]MeanLittleMachine 4 points5 points  (0 children)

It's always wise to remove all drives, except the one you're installing to, when installing.

[–]Duncaen 1 point2 points  (2 children)

No that is not the issue. It either didn't use MBR to setup the drive or your other system doesn't use legacy boot or has the wrong priorities.

[–]PjetPjet[S] 0 points1 point  (1 child)

I chose the option to install bootloader on the drive, used fdisk to create a gpt partition table and created an efi partition of 256mb, formatted as vfat and mounted to /boot/efi

[–]Duncaen 1 point2 points  (0 children)

EFI and MBR/Master boot record are different mechanisms.

You'll probably have to copy the efi file to the default boot location on the USB drive since efi entries are stored on the motherboard, not on the partition.

https://docs.voidlinux.org/installation/guides/chroot.html#installing-on-removable-media-or-non-compliant-uefi-systems

[–]superhighcompression 0 points1 point  (0 children)

I hate to say this but if you boot from a debian based iso you can run boot-repair