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    AST RESEARCH, INC.          TECHNICAL BULLETIN # 1424                2-7-96

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       Manhattan P Windows NT 3.5x Blue Screen Errors with Seagate ST32430N

    PROBLEM

    Windows NT 3.5 and 3.51 may become unstable when used on the following
    equipment, in the following environment on the Manhattan P systems:

           DPT 3224 SCSI controller NT striping or mirroring
           Seagate ST32430N 2G SCSI p/n 230135-220

    CAUSE

    Not known to AST.

    SOLUTION

    Installing NT Service pack 2 solves the problem for NT 3.51.

    For NT 3.1 and 3.50 there is no Service pack to fix this.  However,
    the problem can be worked around by disabling write cacheing on all Seagate
    hard disk drives.

    Download file SWCACHE.EXE from the AST BBS, and read the readme.1st
    file in this archive for complete instructions on how to disable write
    cacheing.

    SYSTEMS AFFECTED
    AST PART NUMBER AND DESCRIPTION

    501502-XXX       Manhattan P 5090 AE models
    501503-XXX       Manhattan P 5100 AE models
    501830-XXX       Manhattan P 5133