grub-mkdevicemap - make a device map file automatically
grub-mkdevicemap [OPTION]...
Generate a device map file automatically.
do not probe any floppy drive
-s, --probe-second-floppy probe the second floppy drive
use FILE as the device map [default=/boot/grub/device.map]
display this message and exit
print version information and exit
print verbose messages
Report bugs to <bug-grub@gnu.org>.
The full documentation for grub-mkdevicemap is maintained as a Texinfo manual. If the info and grub-mkdevicemap programs are properly installed at your site, the command
info grub-mkdevicemap
should give you access to the complete manual.