Dear SCO Customer,

Support Level Supplement (SLS) PTF7062B, the DDI7 adsb HBA Supplement, 
addresses the following problems:

  - The performance of ARCserve tape operations is poor on systems
    using an adsb HBA to control the tape unit.

  - On some tape devices it may not be possible to restore data
    from a backup created by ARCserve.


Software Notes and Recommendations
----------------------------------

SLS PTF7062B should only be installed on these releases:

    SCO UnixWare Application Server Release 2.1.0, 2.1.1, 2.1.2, 2.1.3
    SCO UnixWare Personal Edition Release 2.1.0, 2.1.1, 2.1.2, 2.1.3
    UnixWare 7.0.0, 7.0.1


Installation Instructions
-------------------------

When using SLS PTF7062B as an additional HBA diskette during an operating 
system installation, be sure to insert this diskette _before_ any other HBA
diskettes.

1. Become root and create a new directory by typing the following:
 
     $ su
     Password: <type your root password>
     # mkdir /tmp/pkg
     # chmod 700 /tmp/pkg
     # cd /tmp/pkg

2. Download the ptf7062b.hba.adsb.dd.Z file to the newly created /tmp/pkg 
   directory on your machine.
 
3. Uncompress the file, make a floppy image of the file, and add the
   SLS package to your system using these commands:
 
     # uncompress /tmp/pkg/ptf7062b.hba.adsb.dd.Z
     # dd if=ptf7062b.hba.adsb.dd of=/dev/dsk/f0t
     # pkgadd -d /dev/dsk/f0t

4. Reboot the system after installing this SLS.

5. When using this HBA during installation it should be inserted before
   the distribution HBA diskette, even if the on-screen instructions
   seem to indicate otherwise.


Removal Instructions
--------------------

1. As root, remove the SLS package using these commands:

     $ su
     Password: <type your root password>
     # pkgrm adsb

2. Reboot the system after removing this SLS.


If you have questions regarding this SLS, or the product on which it is
installed, please contact your software supplier.