User's Guide

5-5
Installing Windows NT 4.0
Using Advanced Configuration Parameters
Advanced users may use software parameters to alter the
configuration of the Windows NT 4.0 device drivers supplied by
Adaptec. All Windows NT 4.0 configuration information is stored
in a data structure 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 NT 4.0 SCSI Parameters
Follow the instructions below to enter the registry values that affect
how the Windows NT 4.0 SCSI manager interprets the generic
configuration information of SCSI device drivers. All SCSI host
adapters installed in your system 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.
■ DisableSynchronousTransfers — A nonzero value indicates
that the SCSI host adapter is not to initiate synchronous
negotiations (but it may still accept negotiations initiated by a
SCSI target). The data type for this value is
REG_SZ.
■ 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 NT 4.0 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.
■ Maximum SGList — Specifies the maximum number of
Scatter/Gather elements. Valid values are 2-255. The data type
for this value is
REG_DWORD.
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ASC-39320D UG.book Page 5 Monday, July 22, 2002 1:42 PM