Users Guide

(integrated circuit [IC]) is initialized. The default is Enabled.
Extended BIOS Translation For DOS Drives > 1 GB — This option determines whether extended translation is
available for SCSI hard-disk drives with capacities greater than 1 gigabyte (GB). The default is Enabled.
CAUTION: Back up your hard-disk drive before you change the translation scheme. All data is erased
when you change from one translation scheme to another.
The standard translation scheme for SCSI host adapters provides a maximum accessible capacity of 1 GB. To support
hard-disk drives larger than 1 GB, the 78xx series host adapters include an extended translation scheme that supports
hard-disk drives as large as 8 GB, with a maximum partition size of 2 GB under the MS-DOS operating system.
Extended BIOS translation is used only with MS-DOS 5.0 or later. It is not necessary to enable this setting if you are
using another operating system such as Novell NetWare.
When you partition a hard-disk drive larger than 1 GB, use the MS-DOS
®
fdisk utility as you normally would. Because
the cylinder size increases to 8 MB under extended translation, the partition size you choose must be a multiple of 8
MB. If you request a size that is not a multiple of 8 MB, fdisk rounds up to the nearest whole multiple of 8 MB.
Host Adapter BIOS — This option enables or disables the host adapter BIOS. The default is Enabled.
NOTE: Several SCSISelect options are not valid unless the host adapter BIOS is enabled.
If you are booting from a SCSI hard-disk drive connected to the host adapter, the BIOS must be enabled.
You should disable the host adapter BIOS if the peripherals on the SCSI bus (for example, tape drives) are
all controlled by device drivers and do not need the BIOS.
Support Removable Disks Under BIOS As Fixed Disks — This option controls which removable-media drives
are supported by the host adapter BIOS. The default is Boot Only. The following choices are available.
CAUTION: If a removable-media SCSI device is controlled by the host adapter BIOS, do not remove
the media while the drive is on or you may lose data. If you want to be able to remove media while
the drive is on, install your removable-media device driver and set this option to Disabled.
Boot Only — Only the removable-media drive designated as the boot device is treated as a hard-disk
drive.
All Disks — All removable-media drives supported by the BIOS are treated as hard-disk drives.
Disabled — No removable-media drives are treated as hard-disk drives. In this situation, software
drivers are needed because the drives are not controlled by the BIOS.
Display <Ctrl><a> Message During BIOS Initialization — This option determines whether the
Press <CTRL><A> for SCSISelect (TM) Utility. message appears on your screen during system
start-up. The default is Enabled. If this setting is Disabled, you can still run the SCSISelect utility
by pressing <Ctrl><a> after the host adapter BIOS banner appears.
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 is Enabled.
BIOS Support For Int13 Extensions — This option determines whether the host adapter BIOS
supports disks with more than 1024 cylinders. The default is Enabled.
Installation for Windows NT Server 4.0
This section provides the following information about the Dell SCSI drivers for Windows NT:
Installing the SCSI drivers
Removing a host adapter
Swapping a host adapter