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3. Configuring
NOTE: When disabling parity checking, it is also necessary to disable
disconnects for all devices, as parity checking for the reselection phase
is not disabled. If a device does not generate parity, and it disconnects,
the I/O never completes because the reselection never completes.
Host SCSI ID – In general, it is suggested that you do not change your inte-
grated SCSI ID from the default value of 7, as this gives it the highest priority
on the SCSI bus.
Scan Order – This option allows you to tell the SCSI BIOS and device drivers
to scan the SCSI bus from low to high (0 to max) SCSI ID, or from high to low
(max to 0) SCSI ID. If you have more than one device on the SCSI bus, chang-
ing the scan order changes the order in which drive letters are assigned by the
system. Drive order may be reassigned differently in systems supporting the
BIOS Boot Specification (BBS). See the PCI SCSI Device Management Sys-
tem SDMS 4.0 User's Guide, Chapter 2 "SCSI BIOS" for additional informa-
tion regarding BBS.
NOTE: This scan order option may conflict with operating systems that
automatically assign a drive order.
Removable Media Support – This option defines the removable media sup-
port for a specific drive. When this option is selected, a window appears with
three choices:
• None
• Boot Drive Only
• With Media Installed
None – indicates there is no removable media support whether the drive is
selected in BBS as being first, or first in scan order in non-BBS.
Boot Drive Only – provides removable media support for a removable hard
drive if it is first in the scan order.
With Media Installed – provides removable media support wherever the
drive(s) actually resides. One of these choices can be selected by highlighting
it and pressing Enter.
CHS Mapping – This option defines the cylinder head sector (CHS) values
that will be mapped onto a disk without pre-existing partitioning information.
SCSI Plug and Play Mapping is the default value. To support interchange with
noncompatible systems, there is another option that can be selected by choos-
ing CHS Mapping and then cursoring to "Alternate CHS Mapping".
ASUS LSI SCSI User's Manual
11
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