Add a Tape Drive

For Solaris 7 and below...

You can add the hardware and issue the following commands:
#drvconfig -i st
#tapes

OR

You can reboot the system after adding the hardware.
#touch /reconfigure
#init 6

OR

At the OBP
boot -r

You can use the same commands for Solaris 8 but you can also use the following command:
#devfsadm (it automatically detects the hardware)