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    AST RESEARCH, INC.         TECHNICAL BULLETIN # 1170A               5-16-95

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                OS/2 2.11 SMP ON THE MANHATTAN P&V WITH TWO PROCESSORS

    PROBLEM

    When trying to install OS/2 2.11 SMP using HPFS (High performance file system)
    on a Manhattan P system with two processors, the system may either hang or
    crash with an internal processing error on reboot, after the installation
    is completed.

    CAUSE

    A wrong PSD (Platform Specific Driver) is selected by the install program.

    SYSTEMS AFFECTED : All Manhattan P&V systems with two processors.

    AST PART NUMBER DESCRIPTION

    501502-XXX      Manhattan P
    501500-XXX      Manhattan V

    SOLUTION

    1. Install OS/2 2.11 SMP on a partition of 100-300 MB.

    2. After the installation is completed, the system will reboot with either an
    internal system error, hang, or give a message to replace the EBI2.PSD with
    OS2APIC.PSD.

    3. Boot the system off of the OS/2 2.11 "Installation Disk".
       Insert disk 1 when asked and press the  key when prompted to exit to
       an OS/2 prompt.
       Switch to the CD-ROM drive and unpack OS2APIC.PSD from BUNDLE by
       using the following command:

    "X:\OS2SE21\DISK_2\UNPACK2 ..\DISK_4\BUNDLE A:\
    /N:OS2APIC.PSD"

    where

    A =  floppy drive (destination drive for this file)
    X =  CD-ROM drive (source drive)

    UNPACK2.EXE is available under OS2SE21\Disk_2
    BUNDLE is available under OS2SE21\Disk_4

    4. Copy OS2APIC.PSD to the OS/2 directory on your hard drive.

    5. Modify the PSD statement in the CONFIG.SYS file, in the root directory,
    by using an editor such as the DOS Editor.  Change the following statement

    PSD=EBI2.PSD

    to

    PSD=OS2APIC.PSD

    6. Reboot the system.  The system should now recognize both of the
    processors.