Users Guide

Extended BIOS Translation For DOS Drives > 1 GB Enabled
Host Adapter BIOS Enabled
Support Removable Disks Under BIOS As Fixed Disks Boot Only
Display <Ctrl><a> Message During BIOS Initialization Enabled
BIOS Support For Bootable CD-ROM Enabled
BIOS Support For Int13 Extensions Enabled
NOTE: For the full name of an abbreviation or acronym used in this table, see the Glossary.
SCSI Bus Interface Definitions
The basic host adapter settings are the SCSISelect settings most likely to require modification:
Host Adapter SCSI ID — This option sets the host adapter's SCSI ID. The default is 7, which allows the host
adapter to support narrow SCSI devices in addition to wide SCSI devices. Dell recommends that you leave the
host adapter set to SCSI ID 7.
SCSI Parity Checking — This option determines whether the host adapter verifies the accuracy of data transfer
on the SCSI bus. Most SCSI devices support SCSI parity, so the default is Enabled. You should disable SCSI
Parity Checking if any SCSI device connected to the host adapter does not support SCSI parity. If you are
unsure if a device supports SCSI parity, consult the documentation for the device.
Host Adapter SCSI Termination — This option sets termination on the host adapter. The default is Enabled.
Dell recommends that you leave this option set to the default.
Boot Device Options
Boot Device Options allows you to specify the device from which to boot your system:
Boot Target ID — This option specifies the SCSI ID of the device from which you boot your system. SCSI IDs
are set for the hard-disk drive according to the drive's location on the backplane board for the SCSI ID of each
drive location. The default for Boot Target ID is 0.
Boot LUN Number — If your boot device has multiple logical unit numbers (LUNs) and Multiple LUN
Support is enabled (see Advanced Host Adapter Settings), this option allows you to specify a particular LUN
from which to boot on your boot device. The default is 0.
SCSI Device/Configuration Settings
SCSI Device/Configuration Settings allows you to configure certain parameters for each device on the SCSI bus. To
configure a specific device, you must know the SCSI ID assigned to that device. If you are not sure of the SCSI ID, see
SCSI Disk Utilities
.
Initiate Sync Negotiation — This option determines whether the host adapter initiates synchronous data transfer
negotiation (sync negotiation) between itself and the device. The default is Yes.
Sync negotiation is a SCSI feature that allows the host adapter and its attached SCSI devices to transfer data in
synchronous mode. Synchronous data transfer is faster than asynchronous data transfer.
The host adapter always responds to sync negotiation if the SCSI device initiates it. If neither the host adapter nor
the SCSI device initiates sync negotiation, data is transferred asynchronously.
Normally, you should leave Initiate Sync Negotiation enabled (a setting of Yes), because most SCSI devices
support sync negotiation and because it allows for faster data transfer.