BIOS

Table of contents:

Lenovo ThinkPad

Convert the iso to img

geteltorito -o bios.img Downloads/r07uj26wd.iso

Write it to the USB & boot

dd if=bios.img of=/dev/sdX bs=1M

EFI

List entries

efibootmgr -v

Remove entry

efibootmgr -b {id} -B