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This option is valid only if the SCSI adapter BIOS is set to Enabled. For
example with this setting Enabled, DOS can support two IDE drives on the
IDE adapter, and up to six SCSI drives (supported by the BIOS) on the SCSI
adapter.
v BIOS support for bootable CD-ROM - This option determines whether the
SCSI adapter BIOS provides support for starting up from a CD-ROM drive.
The initial setting is set to Disabled. This option is valid only if the SCSI
adapter BIOS is set to Enabled.
v BIOS support for int 13 extensions - This option determines whether the
SCSI adapter BIOS supports disks with more then 1024 cylinders. The initial
setting is Disabled. This option is valid only if the SCSI adapter BIOS is set
to Enabled.
v BIOS support for UltraSCSI speed - This option determines whether the
SCSI adapter supports the Fast transfer rates (13.4, 16, 20.0) of UltraSCSI
devices. The initial setting is Enabled.
SCSI disk utilities
When you select the SCSI disk utilities program, the program immediately
scans the SCSI bus, then displays a list of all SCSI IDs and the devices assigned
to each ID. When you select a specific ID and device, a menu is displayed, that
shows the options to format and verify the disk media.
To access the SCSI disk utilities, follow these steps:
1. Select the SCSI Disk Utilitiesoption from the menu that appears after
starting SCSI Select. SCSI Select scans the SCSI bus (to determine the
devices installed) and displays a list of all SCSI IDs and the devices
assigned to each ID.
2. Use the arrow keys to move the cursor to a specific ID and device, then
press Enter.
3. A small menu appears, displaying the options Format Disk and Verify
Disk Media.
v Format Disk - This program enables 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. This disk utility program is compatible
with the vast majority of SCSI disk drives.
Attention: A low-level format erases all data on the hard disk. Back up
your data on the disk to be formatted before performing this operation. You
cannot abort a low-level format once it is started. Hard drive manufacturer's
may not warranty the drive after a low level format. Check HDD Warranty
for more information.
v Verify Disk Media - This program scans the hard disk for defects. If the
program finds bad blocks on the disk, it prompts you to reassign them; if
you select Yes to reassign them, these blocks are no longer used. You can
press the Esckey at any time to cancel the program.
B-6
IBM PCI Ultra160 SCSI Adapter: User's Guide
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