linux:/home/cje # dmesg | tail
scsi0 (0:0): rejecting I/O to dead device
sr0: CDROM (ioctl) error, command: <6>Test Unit Ready 00 00 00 00 00 00
Unrecognized sense data (in hex):
        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
scsi0 (0:0): rejecting I/O to dead device
sr0: CDROM (ioctl) error, command: <6>Xpwrite, Read disk info 51 00 00 00 00 00                                                                            00 00 02 00
Unrecognized sense data (in hex):
        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
linux:/home/cje # dmesg | tail
usb-storage: device scan complete
Device not ready. Make sure there is a disc in the drive.
ISO 9660 Extensions: Microsoft Joliet Level 3
ISO 9660 Extensions: RRIP_1991A
ISO 9660 Extensions: Microsoft Joliet Level 3
ISO 9660 Extensions: RRIP_1991A
ISO 9660 Extensions: Microsoft Joliet Level 3
ISO 9660 Extensions: RRIP_1991A
ISO 9660 Extensions: Microsoft Joliet Level 3
ISO 9660 Extensions: RRIP_1991A
linux:/home/cje # /sbin/fdisk -l

Disk /dev/hda: 40.0 GB, 40027029504 bytes
255 heads, 63 sectors/track, 4866 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/hda1               1         131     1052226   82  Linux swap / Solaris
/dev/hda2   *         132        2025    15213555   83  Linux
/dev/hda3            2026        4866    22820332+  83  Linux

Disk /dev/hdb: 200.0 GB, 200049647616 bytes
255 heads, 63 sectors/track, 24321 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/hdb1               1       24320   195350368+  83  Linux
linux:/home/cje # linux:/home/cje # fdisk /dev/sda

Unable to read /dev/sda
linux:/home/cje # fdisk /dev/sda

Unable to read /dev/sda
linux:/home/cje # fdisk /dev/sdb

Unable to open /dev/sdb
linux:/home/cje #