There seems to be an incoherence with the device mapping in my grub. I have
two
hard-drives, one is new and still completely empty (my sda in Linux), and
the other
is my old one (sdb). In '/boot/grub/device.map' file they are shown to be
mapped
as hd0 and hd1, respectively. So I should specify hd1 when I wanted to boot
to my OS'es,
however that doesnt work, I have to specify hd0 instead. In the grub
command line
I get something like this:
set root=(hd1,2)
linux /boot/vmlinuz...
error: partition doesn't exists
Below are the outputs of fdisk and device.map. I created a partition in sda
just to test
if grub was ignoring it for being an empty HD. However nothing changed.
$ sudo fdisk -l /dev/sda
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xc7d79935
Device Boot Start End Blocks Id System
/dev/sda1 1 1000 8032468+ 83 Linux
$ fdisk -l /dev/sdb
Disk /dev/sdb: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000470e5
Device Boot Start End Blocks Id System
/dev/sdb1 * 1 1959 15728640 a6 OpenBSD
Partition 1 does not end on cylinder boundary.
/dev/sdb2 1959 4390 19530752 83 Linux
Partition 2 does not end on cylinder boundary.
/dev/sdb3 * 4390 4403 102400 7 HPFS/NTFS
Partition 3 does not end on cylinder boundary.
/dev/sdb4 4403 14834 83783680 7 HPFS/NTFS
Partition 4 does not end on cylinder boundary.
$ grub-mkdevicemap
$ cat /boot/grub/device.map
(hd0) /dev/sda
(hd1) /dev/sdb
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