Start Unit Request Failed; Disk Drive Configuration Problems - Acer Altos 9100 Series User Manual

4.6.2

Start unit request failed

The BIOS was unable to send a Start Unit Command to the device. Run the
SCSISelect utility and disable Send Start Unit Command for the device.
Time-out failure during SCSI Inquiry command!
or
Time-out failure during SCSI Test Unit Ready command!
or
Time-out failure during Start Unit command!
An unexpected time-out occurred. Check SCSI bus termination. Try disconnecting
the SCSI peripheral cables from the SCSI controller and then starting the computer.
If the computer successfully restarts, check SCSI bus termination and cable
connections. One of the devices on the SCSI bus may be defective.
4.6.3

Disk Drive Configuration Problems

This section describes situations that may occur if your computer has multiple disk
drives, including combinations of standard disk drives and SCSI disk drives.
Standard hard disk drives can be set to the installed or not installed state by the
Setup program supplied with the host computer. The Setup program allows you
to select the number of standard hard disks that are recognized by the computer,
regardless of whether they are physically installed. SCSI drives are not controlled
through the Setup program.
If both SCSI and non-SCSI disk drives are installed, then the non-SCSI disk drive is
always the boot device.
"Standard disk drive" means a disk drive
attached to the computer through a standard
ISA/EISA, non-SCSI disk controller—for
example, an IDE drive.
Chapter 4 - SCSISelect Configuration Utility 4-25