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AcerAltos 19000 User’s Guide
7-22
7.3 Configuring Multiple SCSI Controllers
The AHA-2940/W/UW SCSI controller is
used as an example in the following
discussion.
To use multiple PCI SCSI controllers, do the following:
• Install the boot SCSI controller in the lowest PCI Device number. The Device
number is determined by the slot number on the PCI bus.
To find out the Device number of the AHA-2940 SCSI controller(s), run the
SCSISelect utility (by pressing the key combination Ctrl + A when it is
displayed onscreen at bootup). Look on the first screen of SCSISelect in the
upper right hand corner for Bus:Device xx:xxh (given in hex).
If the Device number is high, move the AHA-2940 to a PCI slot at the other
end of the motherboard and rerun SCSISelect to see if the number is lower.
This step is a recommended solution for
most PCI motherboards. You can also simply
switch the AHA-2940 SCSI controller into
another PCI slot if the boot order is not what
is desired.
•
If you are booting from the AHA-2940 and using ISA/EISA-based host
adapters as secondary devices, you must disable the BIOS on all ISA/EISA-
based SCSI controllers.
• If you are booting from ISA/EISA-based SCSI controllers and using the AHA-
2940 as a secondary device, see your ISA/EISA-based SCSI controller
documentation to ensure the SCSI controller is at the lowest BIOS base
address. ISA/EISA-based SCSI controllers which have their BIOS enabled
boot before the AHA-2940.