Dear SCO Customer,

Support Level Supplement (SLS) ptf4025a, the SCO UnixWare 2.1.3 specfs 
Supplement for devstat system call, addresses this problem:

        During boot to init 2, the "slink" command hangs on snode_close_sv
        when using the UnixWare 2.1.3 specfs driver. This happens on a 
        uniprocessor on every boot. If booting to init 1, then running the 
        /etc/rc2.d/* scripts one at a time manually, the slink command 
        does not hang and you can successfully go to initstate 2.

        Replacing the UnixWare 2.1.3 specfs driver with the UnixWare 2.1 
        specfs driver resolves this problem.


Contents
--------

        /etc/conf/pack.d/specfs/Driver_atup.o
        /etc/conf/pack.d/specfs/Driver_mp.o


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

SLS ptf4025a should only be installed on:

        SCO UnixWare Application Server Release 2.1.1, 2.1.2, 2.1.3
        SCO UnixWare Personal Edition Release 2.1.1, 2.1.2, 2.1.3


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

1. Download the ptf4025a.Z file to the /tmp directory on your machine.

2. As root, uncompress the file and add the SLS package to your system
   using these commands:

        $ su
        Password: <type your root password>
        # uncompress /tmp/ptf4025a.Z
        # pkgadd -d /tmp/ptf4025a
        # rm /tmp/ptf4025a

3. Reboot the system after installing this SLS package.

The release notes displayed prior to installation can be found in:

        /var/sadm/pkg/ptf4025/install/ptf4025.txt


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

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

        $ su
        Password: <type your root password>
        # pkgrm ptf4025

2. Reboot the system after removing this SLS package.

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