efibootmgr | Cheatsheet¶ Enable EFI Variable filesystem support # Device Drivers ---> > Firmware Drivers ---> > [ ] Disable EFI runtime services support by default > [*] Network core driver support # Symbol: NET_CORE [=y] # File systems ---> > Pseudo filesystems ---> > <*> EFI Variable filesystem Delete all efibootmgr options for x in $(efibootmgr -v \ |grep ^Boot \ |grep -vi order \ |cut -f1 -d ' ' \ cut -f1 -d'*' \ |sed "s/Boot00//g" \ |sed "s/^0//g"); do efibootmgr -b $x -B ; done Resource(s) https://linux.die.net/man/8/efibootmgr https://wiki.gentoo.org/wiki/Efibootmgr