This README file accompanies PM400.NLM (patch manager for NetWare
v4.00) v1.00.  The following files are included for this revision:

PM400.NLM     7472   4-30-93   1:18p
PM400.DOC      (This file)

This version of the patch manager replaces any and all previous
versions of the patch manager. PM400 v1.00 can only be used with
NetWare v4.00.


PM400.NLM is the Patch Manager which tracks and manages all
official patches for NetWare v4.0.

Patches for NetWare v4.0 consist of three types: 

     DYNAMIC -- Dynamic patches are implemented as .NLM files that
     can be loaded/unloaded while the server is running.  Unloading
     a dynamic patch will restore the Operating System to its
     original "un-patched" state.  

     SEMI-STATIC -- Semi-static patches can also be loaded while
     the server is running, but they cannot be unloaded.  It is not
     possible to undo the effects of a semi-static patch without
     first downing the server and bringing it back up without
     loading the semi-static patch.  

     STATIC -- A static patch is a DOS executable program that
     modifies the SERVER.EXE file.  This type of patch is applied
     once and its effects are permanent.  It is suggested that a
     backup of the original SERVER.EXE file be made before applying
     a static patch.  (In other words, do not patch the SERVER.EXE
     on your original distribution diskette!)

Dynamic and semi-static patches modify the Operating System in
memory, not on the disk.  This means that dynamic and semi-static
patches must be loaded each time the Operating System is brought up
in order for any 'fixes' to take effect. It is recommended that the
command "LOAD <patch>" be placed in the file server's AUTOEXEC.NCF
file to ensure that the patch is always in effect as soon as the
server is brought up.

In order to see which patches are currently loaded on the system,
type "PATCHES" at the file server command line.  The patches will
then be grouped and displayed according to their type (i.e. -
STATIC, SEMI-STATIC, or DYNAMIC).  Typing "MODULES" at the server
console will show which dynamic patches have been loaded, but will
not show semi-static or static patches.
  
The Patch Manager (PM400.NLM) must be loaded before any dynamic
or semi-static patches can be loaded.  If PM400 is not already
loaded, the <patch>.NLM will attempt to locate PM400 and, if
found, will load it automatically.  PM400 only needs to be
loaded once; all .NLM patches can then be loaded.  PM400 cannot
be unloaded until all patches that rely on it are first unloaded. 


 
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                                 DISCLAIMER   
   
     Novell, Inc. makes no representations or warranties with
respect to any NetWare software, and specifically disclaims any
express or implied warranties of merchantability, title, or fitness
for a particular purpose.   
 
     Distribution of any NetWare software is forbidden without the
express written consent of Novell, Inc.  Further, Novell reserves
the right to discontinue distribution of any NetWare software. 
 
     Novell is not responsible for lost profits or revenue, loss of
use of the software, loss of data, costs of re-creating lost data,
the cost of any substitute equipment or program, or claims by any
party other than you.  Novell strongly recommends a backup be made
before any software is installed.  Technical support for this
software may be provided at the discretion of  Novell. 
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