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    AST RESEARCH, INC.          TECHNICAL BULLETIN # 1171                5-3-95

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    ASCENTIA 910N AND SOLARIS

    PROBLEM

    The Ascentia 910N system will not install either a Solaris Core Beta or a
    Solaris 2.4 with DU5 or earlier.  The Solaris installation fails while making
    the root partitions.

    CAUSE

    The Toshiba 500 MB IDE drive gives a wrong value for current capacity and
    the number of LBA blocks.

    SYSTEMS AFFECTED
    AST PART NUMBER AND DESCRIPTION

    501590-301     ASCENTIA 910N 4/75 CS10
    501589-301     ASCENTIA 910N 4/75 CT10
    501589-401     ASCENTIA 910N 4/75 CT10
    501592-201     ASCENTIA 910N 4/50 CS10

    SOLUTION

    The firmware of the Toshiba 500 MB drive needs to be updated.

    Ascentia 910N systems that have a Toshiba 500 MB hard drive (only), with
    firmware lower than P 1.14, should have the drive replaced with a Quantum
    500 MB hard drive or a Toshiba 500 MB hard drive with firmware P 1.14 or
    greater.  To do this, take the system to your local AST Authorized Service
    Center.

    CAUTION

    This modification should be performed ONLY by a qualified service
    technician.  It is strongly recommended that this change be completed by an
    AST Authorized Service Center.  In no case will AST Research, Inc. be liable
    for damage to the system and its components, or loss of data caused by
    improper modification.

    PREREQUISITES

    A full backup of all data on the hard drive in the computer is strongly
    suggested.