Adaptec AHA-2944UW Installation Manual Download Page 9

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<Ctrl><A>

after the host adapter BIOS banner

appears.

■

Multiple LUN Support

—This option determines

whether booting from a SCSI device that has multiple
LUNs is supported. The default setting is Disabled.
Enable this option if your boot device has multiple
LUNs.

■

BIOS Support for Bootable CD-ROM

—This option

determines whether the host adapter BIOS provides
support for booting from a CD-ROM drive. The
default setting is Enabled.

■

BIOS Support for Int 13 Extensions

—This option

determines whether the host adapter BIOS supports
disks with more than 1024 cylinders. The default set-
ting is Enabled.

■

Support for UltraSCSI Speed

—This option deter-

mines whether the host adapter supports the fast
transfer rates of UltraSCSI devices. The default set-
ting is Disabled.

Running SCSISelect

To start the SCSISelect utility, press Ctrl-A when the fol-
lowing prompt appears at boot time:

Press <Ctrl><A> for SCSISelect (TM) Utility!

When the Options menu appears, select Configure/View
Host Adapter Settings

or SCSI Disk Utilities.

SCSISelect uses menus to list options you can select. To
select an option, use the

↑

and

↓

keys to move the cursor

to the option, then press Enter.

In some cases, selecting an option displays another menu.
You can return to the previous menu at any time by press-
ing Esc. To restore the original SCSISelect default values,
press F6. To toggle the display between color and mono-
chrome modes, press F5 (this feature does not work on
some monitors).

To exit SCSISelect, press Esc until a message prompts
you to exit. If you changed any options, 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 boots.

Using the SCSI Disk Utilities

To access the SCSI disk utilities, select the SCSI Disk Utili-
ties

option from the Options menu that appears when you

start SCSISelect. 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 small menu
appears, displaying the options Format Disk and Verify
Disk Media.

■

Format Disk

—This utility allows you to perform a

low-level format on a hard disk drive. Most SCSI disk
devices are preformatted at the factory and do not
need to be formatted again. The Adaptec Format Disk
utility is compatible with nearly all SCSI disk drives.

■

Verify Disk Media

—This utility allows you to scan

the media of a hard disk drive for defects. If the util-
ity finds bad blocks on the media, it prompts you to
reassign them; if you select Yes, those blocks are no
longer used. You can press Esc at any time to abort
the utility.

Advanced Setups and
Configurations

Configuring Multiple Host Adapters

Multiple AHA-2944UW host adapters can be installed in
your computer; you are limited only by the number of
available PCI bus slots (installation and setup is the same
as a single AHA-2944UW). Each host adapter you install
forms a separate SCSI bus with a different set of SCSI
devices.

In computers with multiple host adapters, consider the
following:

■

If you are booting from the AHA-2944UW, you may
need to install the boot host adapter in the lowest
numbered PCI bus slot. (Most PCI systems do not
have this requirement.) Refer to your system docu-
mentation to determine the PCI bus slot number.

■

If you have two AHA-2944UW host adapters and
each has a boot device connected, the computer boots
from the host adapter in the lowest numbered PCI
bus slot. If you want to select a specific host adapter
to boot from, enable the BIOS only on that host
adapter.