Boot device configuration issues

SCSI termination problems

The installation process for SCO OpenServer is sensitive to SCSI termination. Because the SCSI bus is heavily loaded during installation, incorrect termination will prevent the installation process from completing correctly. Incorrect SCSI termination might result in one of the two following error conditions:

During the installation process, the following set of messages is displayed:

Export phase for "SCO: UNIX" failed
Error exporting component SCO:UNIX:5.0.7 to /{somedir}
Error exporting packages of component SCO:UNIX to client...
Error exporting package SCO:UNIX:RTS
Error exporting file /var/opt/K/SCO/UNIX/...
Error creating symbolic link of ...
Not a directory

When you reboot the system after an installation procedure which was apparently successful, the following message is displayed:
```
PANIC: srmountfun - Error 22 mounting rootdev hd(1/42)
```

Before you attempt to reinstall, follow the procedure below which applies to your installation hardware situation to recover from these conditions.

WARNING: Before following these procedures, turn off the power and remove the power cord from the power source. There is risk of injury to person or equipment if you do not do so.

Internal devices

If the installation CD-ROM and the root hard disk are physically located on the internal bus (inside the machine):

Remove all devices from the external SCSI bus by unplugging the cable from the back of the SCSI host adapter card (the backplane).
Terminate the host adapter either by plugging a resistor pack into the backplane, setting jumpers, or by using the BIOS setup program.
Remove all devices from the internal SCSI bus except for the installation device CD-ROM and the root hard disk. You must remove secondary hard drives. Floppy drives might remain on the host adapter because they are not connected to the SCSI bus.
Ensure that only the host adapter and the last device on the internal cable are terminated.
Reinstall your SCO OpenServer system.

Mixed internal and external devices

If either the installation device or the root hard disk is on the external bus and the other device (installation device or root hard disk) is on the internal bus:

Ensure that the external device either has a resistor pack plugged into the back of the SCSI peripheral controller (tape device, CD-ROM, or hard disk), or that the device's termination is activated by using the appropriate settings to enable active termination. (See the device documentation for appropriate switch settings.)
Carefully remove any resistor packs installed on the host adapter card. (See your host adapter documentation for specific location.)
Remove all devices from the internal SCSI bus except for the installation device CD-ROM and the root hard disk. Floppy drives might remain on the host adapter because they are not connected to the SCSI bus.
Ensure that only the last devices on the internal and external cables are terminated. The SCSI host adapter itself should not be terminated.
Reinstall your SCO OpenServer system.

External devices

If both the installation device and the root hard disk are located on the external SCSI bus:

Ensure that the last physical connection of the external cable chain is plugged into a terminated device.
Ensure resistor packs are installed on the host adapter card.
Remove (unplug) the internal SCSI bus cable.
Reinstall your SCO OpenServer system.

If you still experience problems after following these steps, check the SCSI termination again. Also consider replacing the internal-bus SCSI cable and/or the passive resistor pack used to terminate the external bus.