Dell 6100 - Advanced Configuration Options Submenu

3-4 Dell PowerEdge 6100/200 System User’s Guide
the devices are allowed to start at the same time.
Most devices require you to set a jumper before they
can respond to this command.
NOTE: For many devices, if Send Start Unit Com-
mand is set to Yes, the boot time will vary depending
on how long it takes each drive to start.
Advanced Configuration Options Sub-
menu
The advanced host adapter settings should not be
changed unless absolutely necessary. These values are set
by Dell, and changing them may cause conflicts with the
SCSI devices.
•
Host Adapter BIOS—This option enables or disables
the host adapter BIOS. The default setting 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 con-
nected 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, 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 setting is Boot Only. The follow-
ing choices are available.
— 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 sup-
ported 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.
•
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 setting is Enabled.
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 under the MS-DOS
®
operating system
with a maximum partition size of 2 GB.
Extended BIOS translation is used only with
MS-DOS 5.0 or later. It is not necessary to enable
this 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.
•
Display <Ctrl><A> Message During BIOS Initializa-
tion—This option determines whether the Press
<CTRL><A> for SCSISelect (TM) Util-
ity! message appears on your screen during system
start-up. The Dell factory default setting is Enabled.
NOTES: If this setting is disabled, you can still run
the SCSISelect utility by pressing <Ctrl><A> after
the host adapter BIOS banner appears.
The Intel default for this setting is Disabled. Dell
enables this option at the factory. However, if you
reset the default values, this option will be Disabled
and you must reset it to Enabled.
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 remov-
able-media device driver and set this option to
Disabled.
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.