```
SYNOPSIS
efibootmgr [-v]
efibootmgr -a -b bootnum
efibootmgr -A -b bootnum
efibootmgr -B -b bootnum
efibootmgr -c -l loader [-aD] [-b bootnum] [-k kernel] [-L label]
efibootmgr -n -b bootnum
efibootmgr -N
efibootmgr -o bootorder
efibootmgr -t timeout
efibootmgr -T
```