[    1.866417] sd 1:0:0:0: [sda] 312581808 512-byte logical blocks: (160 GB/149 GiB)
[    1.866508] sd 1:0:1:0: [sdb] 312581808 512-byte logical blocks: (160 GB/149 GiB)
[    1.866710] sd 1:0:0:0: [sda] Write Protect is off
[    1.866721] sd 1:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    1.866758] sd 1:0:1:0: [sdb] Write Protect is off
[    1.866769] sd 1:0:1:0: [sdb] Mode Sense: 00 3a 00 00
[    1.866837] sd 1:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[    1.866884] sd 1:0:1:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[    1.872375] sd 1:0:0:0: Attached scsi generic sg1 type 0
[    1.872706] sd 1:0:1:0: Attached scsi generic sg2 type 0
[    1.935538]  sda: sda1 sda2 < sda5 >
[    1.935683]  sdb: unknown partition table
[    1.936386] sd 1:0:1:0: [sdb] Attached SCSI disk
[    1.936774] sd 1:0:0:0: [sda] Attached SCSI disk
[   44.883394] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
[   51.914397] Adding 4192252k swap on /dev/sda5.  Priority:-1 extents:1 across:4192252k
[   51.953156] EXT4-fs (sda1): re-mounted. Opts: (null)
[   52.264205] EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro
[   54.636736] Installing knfsd (copyright (C) 1996 okir@monad.swb.de).
root@debianIBM:/home/james# fdisk /dev/sdb
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0xb79427b1.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.

Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

Command (m for help):