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Configuring Disk Drives
Every hard disk must be low-level formatted, parti-
tioned, and logically formatted before you can use it
to store data. Most SCSI hard disks are physically for-
matted at the factory and do not need to be formatted
again.
If you connected a new hard disk drive to your host
adapter, you must partition and logically format the
drive. For DOS and Windows (3.x and 95) use the
DOS Fdisk and Format commands (see your com-
puter and DOS documentation). For other operating
systems, see your operating system documentation.
If you are booting from a SCSI hard disk drive, make
sure the Hard Disk (or Drives) setting in your
computer's CMOS setup program is set to None or
No Drives Installed, as required for SCSI hard disk
drives. (See your computer documentation.)
If the motherboard has an embedded SCSI controller,
disable the embedded controller after you install the
AHA-2920C.
If you installed both SCSI and non-SCSI (e.g., IDE)
disk drives, the non-SCSI disk drive is always the
boot device
Installing Multiple Adapters
You can install multiple SCSI host adapters if unused
I/O ports and BIOS addresses are available.
Each host adapter you install forms a separate SCSI
bus with a different set of SCSI devices.
SCSI IDs can be reused as long as the ID is assigned
to a device on a different host adapter (for example,
each host adapter can have a device with SCSI ID 0).
If you have two or more SCSI host adapters, enable
the BIOS only on the host adapter you have selected
as a boot device. Disable the BIOS on the other host
adapter(s).
6
Using SCSISelect
The SCSISelect configuration utility allows you to change
host adapter settings without opening the computer
case when using the AHA-2920C. SCSISelect also has
SCSI disk utilities that allow you to perform a low-level
format or to verify the disk media of your SCSI hard disk
drives.
Starting the SCSISelect Utility
You can start SCSISelect by pressing Ctrl-A when the fol-
lowing prompt appears briefly at boot time:
Press <Ctrl><A> for SCSISelect (TM) Utility!
The first menu that appears displays two options:
Configure/View Host Adapter Settings and SCSI Disk
Utilities.
Using SCSISelect Menus
SCSISelect uses menus to list selectable options. To select
an option, use the
and
keys to move the cursor to the
option, then press Enter.
When you select an option, another menu may appear.
Return to the previous menu at any time by pressing Esc.
To restore the original SCSISelect default values, press
F6. To toggle the display between color and mono-
chrome modes, press F5 (this feature may not work on
some monitors).
Exiting SCSISelect
To exit SCSISelect press Esc. A message prompts you to
exit (if you changed any host adapter settings, you are
prompted to save the changes before you exit). At the
prompt, select Yes to exit, then press any key to reboot
the computer. Any changes you made in SCSISelect take
effect after the computer reboots.
Using the SCSI Disk Utilities
To access the SCSI disk utilities, select the SCSI Disk
Utilities option from the menu that appears when you
start SCSISelect.
Once the option is selected, SCSISelect immediately scans
the SCSI bus and displays a list of all SCSI IDs and the
devices assigned to each ID. When you select a specific
ID and device, a menu appears, displaying the Format
Disk and Verify Disk Media options.
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