josef@josef-maxtor-quad:~$ sudo grub-probe -vt device "(hd3)"
grub-probe: Info: `/dev/fd0' looks like a floppy drive, skipping.
grub-probe: Info: Scanning for dmraid_nv RAID devices on disk hd0.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: Scanning for dmraid_nv RAID devices on disk hd1.
grub-probe: Info: the size of hd1 is 1953525168.
grub-probe: Info: the size of hd1 is 1953525168.
grub-probe: Info: Scanning for dmraid_nv RAID devices on disk hd2.
grub-probe: Info: the size of hd2 is 1953525168.
grub-probe: Info: the size of hd2 is 1953525168.
grub-probe: Info: Scanning for dmraid_nv RAID devices on disk hd3.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: scanning hd0 for LVM.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: no LVM signature found.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: scanning hd1 for LVM.
grub-probe: Info: the size of hd1 is 1953525168.
grub-probe: Info: no LVM signature found.
grub-probe: Info: the size of hd1 is 1953525168.
grub-probe: Info: scanning hd2 for LVM.
grub-probe: Info: the size of hd2 is 1953525168.
grub-probe: Info: no LVM signature found.
grub-probe: Info: the size of hd2 is 1953525168.
grub-probe: Info: scanning hd3 for LVM.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: no LVM signature found.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd0.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd1.
grub-probe: Info: the size of hd1 is 1953525168.
grub-probe: Info: the size of hd1 is 1953525168.
grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd2.
grub-probe: Info: the size of hd2 is 1953525168.
grub-probe: Info: the size of hd2 is 1953525168.
grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd0.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd1.
grub-probe: Info: the size of hd1 is 1953525168.
grub-probe: Info: the size of hd1 is 1953525168.
grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd2.
grub-probe: Info: the size of hd2 is 1953525168.
grub-probe: Info: the size of hd2 is 1953525168.
grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd0.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd0,msdos6.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd0,msdos5.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd0,msdos3.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd0,msdos2.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd0,msdos1.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd1.
grub-probe: Info: the size of hd1 is 1953525168.
grub-probe: Info: the size of hd1 is 1953525168.
grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd1,msdos2.
grub-probe: Info: the size of hd1 is 1953525168.
grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd1,msdos1.
grub-probe: Info: the size of hd1 is 1953525168.
grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd2.
grub-probe: Info: the size of hd2 is 1953525168.
grub-probe: Info: the size of hd2 is 1953525168.
grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3,msdos9.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3,msdos8.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3,msdos7.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3,msdos6.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3,msdos5.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3,msdos2.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3,msdos1.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd0.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd0,msdos6.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd0,msdos5.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd0,msdos3.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd0,msdos2.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd0,msdos1.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd1.
grub-probe: Info: the size of hd1 is 1953525168.
grub-probe: Info: the size of hd1 is 1953525168.
grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd1,msdos2.
grub-probe: Info: the size of hd1 is 1953525168.
grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd1,msdos1.
grub-probe: Info: the size of hd1 is 1953525168.
grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd2.
grub-probe: Info: the size of hd2 is 1953525168.
grub-probe: Info: the size of hd2 is 1953525168.
grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3,msdos9.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3,msdos8.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3,msdos7.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3,msdos6.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3,msdos5.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3,msdos2.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3,msdos1.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: scanning hd0 for LVM.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: no LVM signature found.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: scanning hd0,msdos6 for LVM.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: no LVM signature found.
grub-probe: Info: scanning hd0,msdos5 for LVM.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: no LVM signature found.
grub-probe: Info: scanning hd0,msdos3 for LVM.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: no LVM signature found.
grub-probe: Info: scanning hd0,msdos2 for LVM.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: no LVM signature found.
grub-probe: Info: scanning hd0,msdos1 for LVM.
grub-probe: Info: the size of hd0 is 1953525168.
grub-probe: Info: no LVM signature found.
grub-probe: Info: scanning hd1 for LVM.
grub-probe: Info: the size of hd1 is 1953525168.
grub-probe: Info: no LVM signature found.
grub-probe: Info: the size of hd1 is 1953525168.
grub-probe: Info: scanning hd1,msdos2 for LVM.
grub-probe: Info: the size of hd1 is 1953525168.
grub-probe: Info: no LVM signature found.
grub-probe: Info: scanning hd1,msdos1 for LVM.
grub-probe: Info: the size of hd1 is 1953525168.
grub-probe: Info: no LVM signature found.
grub-probe: Info: scanning hd2 for LVM.
grub-probe: Info: the size of hd2 is 1953525168.
grub-probe: Info: no LVM signature found.
grub-probe: Info: the size of hd2 is 1953525168.
grub-probe: Info: scanning hd3 for LVM.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: no LVM signature found.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: scanning hd3,msdos9 for LVM.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: no LVM signature found.
grub-probe: Info: scanning hd3,msdos8 for LVM.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: no LVM signature found.
grub-probe: Info: scanning hd3,msdos7 for LVM.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: no LVM signature found.
grub-probe: Info: scanning hd3,msdos6 for LVM.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: no LVM signature found.
grub-probe: Info: scanning hd3,msdos5 for LVM.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: no LVM signature found.
grub-probe: Info: scanning hd3,msdos2 for LVM.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: no LVM signature found.
grub-probe: Info: scanning hd3,msdos1 for LVM.
grub-probe: Info: the size of hd3 is 3907050240.
grub-probe: Info: no LVM signature found.
grub-probe: Fehler: Kanonischer Pfad von »(hd3)« konnte nicht ermittelt werden.

last message means something like Kanoical path of »(hd3)« could not get resolved