Installing and Configuring SCSI Drivers 3-15
Bit Mask Options
Use this example to aid in calculating bit-mask option hex
values. Each SCSI device (ID 0-7 or 0-15 for the AIC-
7880 and optional AHA-2940W) is enabled by a 1 in its
corresponding bit position. As illustrated in Figure 3-1,
dev_enable=05 enables driver registration of the devices
at SCSI IDs 0 and 2.
Figure 3-1. Bit Position
Sample
load
Command
The following command is a sample load command with
no option switches (loaded from drive A):
load a:\scsi\aic7870.dsk
Slot values that already have another registered device do
not appear on the screen. Only the slots available for use
by the host adapter appear when this command is entered.
If an error message appears as you attempt to load the
driver, refer to “Troubleshooting for NetWare” later in
this section.
The following command is a sample command loading
the aic7870.dsk driver with command line options
(loaded from drive A):
load a:\scsi\aic7870.dsk verbose=y slot=22
Using
startup.ncf
and
autoexec.ncf
The startup.ncf and autoexec.ncf files contain a set of
commands that are executed at server start-up. The
startup.ncf file contains commands to load the disk driv-
ers. Once startup.ncf loads disk drivers, control is
passed to the autoexec.ncf file to complete the boot pro-
cess. For additional information on the startup.ncf and
autoexec.ncf files, refer to your NetWare documentation.
To automatically load the aic7870.dsk at server start-up,
the startup.ncf must contain a load command line that
specifies the location of the driver on the hard-disk drive,
any available options (see “Using the load Command
Line Options” earlier in this section), and the slot number
(see “Calculating the Slot Number” earlier in this
section).
NOTE: To load the driver from your hard-disk drive, the
aic7870.dsk driver and aspitran.dsk module must be cop-
ied from your NetWare 4.x driver diskette to a directory on
your hard-disk drive (usually, the server's start-up direc-
tory [for example, c:\nwserver]).
The syntax to load the aic7870.dsk driver is:
load [pathname] aic7870.dsk [options] slot=x
For example, the command line to load the driver from
the c:\nwserver directory, with the verbose
=
option on,
and a slot number of 16 follows:
load c:\nwserver\aic7870.dsk verbose=y slot=16
NOTE: For each Adaptec 78xx host adapter installed, a
separate load command line must be included in the
startup.ncf file. The slot number (slot=) identifies the
specific adapter.
To modify the startup.ncf file, follow these steps:
1. Type
install
at the NetWare prompt, and press
<Enter>.
2. Select the appropriate menu choice that allows
you to edit the startup.ncf file.
3. Make the necessary changes. When you are fin-
ished, press <F10>.
Using SCSI Devices
The following sections provide procedures and tips on
the following topics:
•
Booting from a SCSI device
•
Formatting media
•
Using removable media
•
Using NetWare-tested and -approved drives
•
Using the NetWare tape backup utility
•
Using a CD-ROM drive with NetWare
•
Optimizing performance
15141312 111098 7654 3210
0 0 0 0 0 000 0000 0101
0 0 0 5
bit position
SCSI ID
0, 2
converted
binary-to-hex
= 05h
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