I'm rebuilding one of my servers at home. I used to have (6) 500GB SATA drives in this box, however I recently replaced a few now I have (3) 500G and (3) 2TB drives. I'm carving up the drives to build RAID 5 partitions across them. I sliced up the 2TB drives and /proc/partitions shows: 8 0 488386584 sda 8 1 19530752 sda1 8 2 9765888 sda2 8 3 459086368 sda3 8 16 488386584 sdb 8 17 19535008 sdb1 8 18 9767520 sdb2 8 19 459081472 sdb3 8 32 488386584 sdc 8 33 19535008 sdc1 8 34 9767520 sdc2 8 35 459081472 sdc3 8 48 1953514584 sdd 8 49 1953512001 sdd1 8 64 1953514584 sde 8 65 1953512001 sde1 8 80 1953514584 sdf 8 81 1953512001 sdf1 As it should. Then I reboot, and /proc/partitions shows: 8 0 488386584 sda 8 1 19530752 sda1 8 2 9765888 sda2 8 3 459086368 sda3 8 16 488386584 sdb 8 17 19535008 sdb1 8 18 9767520 sdb2 8 19 459081472 sdb3 8 48 1953514584 sdd 8 64 1953514584 sde 8 32 488386584 sdc 8 33 19535008 sdc1 8 34 9767520 sdc2 8 35 459081472 sdc3 8 80 1953514584 sdf Hmm.... where'd the partitions go on sdd, sde, and sdf? I look for the devices: # ls /dev/sdd* /dev/sdd The kernel is definitely not reading the partitions for some reason. dmesg shows them, however: [ 1.697846] sdd1 [ 1.700303] sd 3:0:0:0: [sdd] Attached SCSI disk [ 1.705410] sde1 [ 1.705629] sd 4:0:0:0: [sde] Attached SCSI disk [ 1.706191] sdf1 [ 1.706626] sd 5:0:0:0: [sdf] Attached SCSI disk and the partitions are definitely on disk: # fdisk -l /dev/sdd Device Boot Start End Blocks Id System /dev/sdd1 1 243201 1953512001 83 Linux I've never seen this behavior before. Any ideas? Thanks, Brian