Booting the Computer from a SCSI Drive

Booting the Computer from a SCSI Drive (connected to Adaptec SCSI Controller)

Be sure the standard hard disk drives are not configured in the system, using the Setup program.

NOTE: Standard hard disk drive means the disk drive(s) attached to the system by a standard ISA/EISA, non-SCSI disk adapter (example, IDE drives). Standard hard disk drives can be set to the installed or not installed state by the Setup program supplied with the computer. The Setup program allows you to select a number of standard hard disk drives that are recognized by the system, regardless of whether they are physically installed. SCSI drives are not controlled through the Setup program.

Be sure the SCSI boot drive address is set to SCSI ID 0 (AHA-2940/2940W Adapters) and that there are no SCSI ID conflicts. You can use the Adaptec SCSISelect Configuration Utility to determine the SCSI address of the devices attached to the SCSI bus.
Be sure that SCSI parity is consistently enabled or disabled on all devices on the SCSI bus.
NOTE: All SCSI devices currently supported on PC Servers support parity checking.
To check the parity setting(s) of the devices on the SCSI bus, do the following:
1. Start the SCSISelect utility.
2. Select the Configure/View Host Adapter Settings menu.
3. Set SCSI Parity Checking to Enable for all the devices connected to the SCSI bus.
NOTE: Some early developed SCSI devices may not support parity checking. If one or more of the devices connected to the SCSI bus do not support parity checking, set SCSI Parity Checking to Disabled for all of the SCSI devices connected to the SCSI bus.
Try enabling include in BIOS Scan in the SCSI Device Configuration option of the SCSISelect utility.
Be sure to power-off, then power-on the computer after changing any value on a host adapter, in a Setup program, or on a SCSI device.
Be sure the SCSI bus is properly terminated. See 'Termination (Devices)', 'Termination (AHA-2940/2940W Adapters)' and 'Termination (for Multiple-Computer Configurations)'
Be sure the intended boot disk has an active DOS partition and has been formatted.
Check cable connections.

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