Voilà ce que me renvoie un fdisk -l :
[root@localhost ~]# fdisk -l
Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders, total 312581808 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x10000000
Device Boot Start End Blocks Id System
/dev/sda1 * 63 224909 112423+ 6 FAT16
/dev/sda2 225280 132347903 66061312 7 HPFS/NTFS/exFAT
/dev/sda3 132347904 174288895 20970496 7 HPFS/NTFS/exFAT
/dev/sda4 174290949 312592769 69150910+ f W95 Ext'd (LBA)
/dev/sda5 174292992 312580095 69143552 7 HPFS/NTFS/exFAT
Disk /dev/sdb: 120.0 GB, 120034123776 bytes
255 heads, 63 sectors/track, 14593 cylinders, total 234441648 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x7485b412
Device Boot Start End Blocks Id System
/dev/sdb1 2048 234438655 117218304 7 HPFS/NTFS/exFAT
Disk /dev/sdc: 1998 MB, 1998585856 bytes
251 heads, 8 sectors/track, 1943 cylinders, total 3903488 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00020fae
Device Boot Start End Blocks Id System
/dev/sdc1 * 2048 3903487 1950720 b W95 FAT32
Disk /dev/mapper/live-rw: 4294 MB, 4294967296 bytes
255 heads, 63 sectors/track, 522 cylinders, total 8388608 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/live-osimg-min: 4294 MB, 4294967296 bytes
255 heads, 63 sectors/track, 522 cylinders, total 8388608 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Comme tu peux le voir il voit les partitions du disque normalement. J'arrive également à voir les partitions dans nautilus, à les monter et à les utiliser sans souci.
Je n'ai pas encore essayé en désactivant le 2e disque dur, j'essayerais la prochaine fois.