i am playing with grub and i change the root using:
root (hda,x)
how can i know what's x for /dev/sda7
?
fdisk -l
Device Boot Start End Blocks Id System /dev/sda1 * 1 1958 15727603+ 7 HPFS/NTFS /dev/sda2 1959 7476 44323335 f W95 Ext'd (LBA) /dev/sda5 1959 4569 20972826 7 HPFS/NTFS /dev/sda6 4570 5352 6289416 83 Linux /dev/sda7 6373 7119 6000246 83 Linux /dev/sda8 7120 7476 2867571 83 Linux /dev/sda9 5353 6135 6289416 83 Linux /dev/sda10 6136 6372 1903671 82 Linux swap / Solaris
the problem is that in Gparted view, the order is not like sda5, sda6, sda7, …
but the order is like:
- sda6
- sda9
- sda10
- sda7
- sda8
so what's x for /dev/sda7
?
Best Answer
First off, you need to realize that in grub, it does not use normal linux hard drive identifiers. Instead, the letters correlate to numbers, starting with zero (i.e. hda = hd0, hdb = hd1, etc).
Secondly, in grub-legacy, the partition number starts at 0, not 1 like in Linux, so subtract 1 from the linux partition number. And in grub2, it starts at 1.
An example is: hda1 = (hd0, 0)
Finally, grub does not differentiate between hd and sd devices, so everything is labeled hd.
Thus, in your case, your grub entry for /dev/sda6 should read (hd0, 5)