Power Computing PowerBase Low-Profile, User Manual

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Installing Internal Drives
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PowerCenter Pro User’s Guide
87
Set the SCSI ID
Before installing a drive into a Minitower system (or adding an external SCSI
drive to a Minitower or a Low-Profile system), set the drive’s SCSI ID, as
explained below.
1. Set SCSI ID.
Following the instructions which came with your device, set its SCSI ID and
make sure it is not terminated.
Each device in a SCSI chain requires a unique number called a SCSI ID,
which the computer uses to identify the device. The computer itself is
assigned SCSI ID 7 and the primary internal hard disk is assigned SCSI ID 0.
Every other device you install must have a unique number from 1 to 6.
Drives provided by Power normally come with SCSI ID pre-set as follows where
bus 1 is the high-speed 20 MB per second UltraSCSI bus and bus 0 is the 5 MB
per second bus.
To determine what SCSI IDs have already been assigned to which devices, go
to the
H a r d D i s k T o o l k i t ™ P E
folder in the
U t i l i t i e s
folder on your
hard disk and run H D T P r i m e r ™ P E . HDT Primer will scan your SCSI
buses and display the Bus number (0 or 1), the SCSI ID, name, and other
parameters of all of the SCSI devices on the bus (see example below).
Bus SCSI ID Device
1 0 primary internal hard drive
1 1 optional additional internal hard drive
0 3 CD-ROM drive (terminated)
0 5 optional removable-cartridge drive
both 7 motherboard (self-terminated)
7 Install drives Page 87 Friday, June 6, 1997 10:09 AM