Identifying a System's Devices

Use the output of the prtconf and sysdef commands to identify which disk, tape, and CD-ROM devices are connected to the system. The output of these commands display the driver not attached messages next to the device instances. Since these devices are always being monitored by some system process, the driver not attached message is usually a good indication that there is no device at that device instance.

For example, the following prtconf output identifies a device at instance #3 and instance #6, which is probably a disk device at target 3 and a CD-ROM device at target 6 of the first SCSI host adapter (esp, instance #0).

$ /usr/sbin/prtconf
.
.
.
 
esp, instance #0
            sd (driver not attached)
            st (driver not attached)
            sd, instance #0 (driver not attached)
            sd, instance #1 (driver not attached)
            sd, instance #2 (driver not attached)
            sd, instance #3
            sd, instance #4 (driver not attached)
            sd, instance #5 (driver not attached)
            sd, instance #6
.
.
.

You can use the following command to display only the devices that are attached to the system.

$ prtconf | grep -v not 

You can also glean device information from the sysdef output.