Dell POWEREDGE 4300 - Page 46

3-8 Dell PowerEdge 4300 Systems User’s Guide
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
78
xx
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 neces-
sary 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 util-
ity as you normally would. Because the cylinder size increases to 8 megabytes
(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 SCSI
Select
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 peripher-
als on the SCSI bus (for example, CD-ROM 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.
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— 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 deter-
mines 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 SCSI
Select
utility by pressing
<Ctrl><a> after the host adapter BIOS banner appears.
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