The device notation should be specified as a device in /dev. Below are some examples:
 - "/dev/sda" will install GRUB to your primary drive (UEFI partition/boot
   record);
 - "/dev/sdb" will install GRUB to a secondary drive (which may for instance
   be a thumbdrive);
 - "/dev/fd0" will install GRUB to a floppy.
Tira n yibenk ilaq ad tili d tufrint am yibenk deg dev. Ddaw-a llan kra n yimedyaten:
 - "/dev/sda" ad isebded GRUB ɣef unuḍaf-ik·im agejdan (Aḥric UEFI/boot
   record);
 - "/dev/sdb" ad isebded GRUB ɣef unuḍaf amalel (i izemren d amedya
   ad yili anuḍaf USB);
 - "/dev/fd0" ad isebded GRUB ɣef tḍebsit talwayant.