Silicon Graphics CHALLENGE CMN A012B, Owner'S Manual

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30
Software Guidelines
three-digit number, the first one or two digits identify the IO4 board by the
Ebus slot number. The final digit identifies which of the eight possible SCSI
buses (0 through 7) on the IO4 board is used. Figure B-1 illustrates how the
buses are physically laid out on the IO4 board.
Forming the Drive Address
The software drive identification number uses the same form as in the
addressing scheme described earlier. Insert the IO4 board slot number
and/or the SCSI bus number, followed by the drive number and partition
number, as required.
PROM Addressing
Assume that you want to address partition 0 on SCSI drive number 6. This
drive connects to SCSI bus number 6. You can also assume that the master
IO4 resides in slot number 15 in a rackmount system.
The PROM drive address is:
dksc(6,6,0)
IRIX Addressing
Assume that you want to address partition 0 on SCSI drive (number 6). This
drive connects to SCSI bus number 6. Also assume that the IO4 resides in slot
number 14.
The IRIX drive address is:
/dev/dsk/dks146d6s0
Using the New Address
You must know this new drive addressing and identification method to run
the disk maintenance programs such as
fx and MAKEDEV . For information
on running these programs, see the system administration documents for
your computer.