I canget to that part, but how does the window work?

grub>

Possible commands are: blocklist boot cat chainloader cmp color configfile de
bug device displayapm displaymem dump embed find fstest geometry halt help hid
e impsprobe initrd install ioprobe kernel lock makeactive map md5crypt module
modulenounzip pager partnew parttype password pause quit read reboot root root
noverify savedefault serial setkey setup terminal terminfo testload testvbe un
hide uppermem vbeprobe

grub>
kernel

Error 12: Invalid device requested

grub>


What do I do from here?