User's Guide

6-5
Installing Windows XP
Using Advanced Configuration Parameters
Advanced users may use software parameters to alter the
configuration of the Windows XP device drivers supplied by
Adaptec. All Windows XP configuration information is stored in a
data structure supplied by Windows XP, called the Registry. You
can edit this information through a tool called the Registry Editor.
Caution: Do not edit your Registry unless it is absolutely
necessary. If there is an error in your Registry, your computer
may become nonfunctional.
Using Windows XP SCSI Parameters
Follow the instructions below to enter the registry values that affect
how the Windows XP SCSI manager interprets the generic
configuration information of SCSI device drivers. Each driver has
its own key reference in the Registry. In this example, the Ultra320
key is used (
adpu320). All SCSI host adapters supported by the
modified key are affected by the values you enter here. A list of
valid values follows:
Note: The following value keys are case-sensitive and must be
entered exactly as shown.
■ MaximumLogicalUnit—This can limit the scan for connected
devices on the SCSI bus. Valid values are 0 to 32. If 1 is
specified, the Windows XP SCSI manager assumes that no SCSI
targets support LUNs other than 0. Otherwise, LUNs from 0 to
32 are scanned during system initialization. The data type for
this value is REG_DWORD.
■ MaximumSGList—Specifies the maximum number of Scatter/
Gather elements. Valid values are 2-255. The data type for this
value is REG_DWORD.
!
ASC-39320D UG.book Page 5 Monday, July 22, 2002 1:42 PM