				                   January 11, 1999

Diskeeper[R] 4.1 (Build 202) for Windows NT[R] V4.0 

For x86 Platforms

This text file provides information you should know about 
this version of Diskeeper.


PLATFORMS AND OPERATING SYSTEM VERSIONS SUPPORTED
=================================================

This version of Diskeeper is supported on Intel x86 platforms 
running Windows NT 4.0 builds 1381 and higher.  


MAJOR CHANGES IN THIS RELEASE
=============================

The following major additions have been made to Diskeeper since
the previous version (Version 4.0 Build 186):

1.  Corrections have been made to the Boot-Time module to prevent
    possibilities of data corruption under certain circumstances.

2.  In this release of Diskeeper, if the CHKDSK option is selected
    in the Boot-Time Defragmentation dialog box, it will execute 
    CHKDSK with the /F qualifier only.  The /R qualifier is no
    longer used by Diskeeper.

3.  When the CHKDSK option is selected in the Boot-Time 
    Defragmentation dialog box, CHKDSK is now only run before the 
    Boot-Time Defragmentation process.  In previous versions, 
    CHKDSK was run both before and after the defragmentation 
    process.


MAJOR CHANGES IN DISKEEPER 4.0
==============================

The following major additions have been made to Diskeeper since
the previous major version (Version 3.0 Build 172):

1.  This version of Diskeeper introduces Boot-Time Paging File
    Fragmentation Reduction.  This allows Diskeeper to reduce
    or eliminate paging file fragmentation.

2.  The Boot-Time Directory Consolidation option under the 
    Special Tools menu has been changed to Boot-Time Defragmenter.
    The dialog box displayed when this option is selected includes 
    the option to Reduce Paging File Fragmentation.  This option 
    is not selected by default.  The same dialog box also includes 
    the option to Consolidate Directories, which is also not 
    enabled by default.

    When you select Reduce Paging File Fragments, Diskeeper checks 
    for a recent fragmentation analysis.  If one has been run in 
    the last few minutes, it examines the analysis to see if 
    contiguous space exists for paging file defragmentation.  If an 
    analysis has not been run recently, Diskeeper prompts to ask 
    if an analysis should be run.  The analysis is necessary 
    before running the Paging File Fragmentation Reduction feature.


MINOR CHANGES IN DISKEEPER 4.0
==============================

The following minor additions have been made to Diskeeper since
Version 3.0 Build 172:

1.  The date and time of a saved fragmentation analysis is 
    now shown when a saved analysis is displayed.

2.  An icon is now displayed in the Windows NT taskbar when 
    Diskeeper is actively running on a partition.  This icon 
    is only used to indicate if a Diskeeper defragmentation
    engine is running.  Clicking on this icon will not open
    the Diskeeper GUI.

3.  Fixes have been made to the Set It and Forget It 
    scheduling mechanism to allow Diskeeper to run on the 
    same day a schedule is specified.  In previous versions, 
    if a Set It and Forget It job was scheduled to run 
    Everyday from 10:00 to 12:00, and the current time was 
    9:00, the Diskeeper job would not actually start running
    until 10:01 the following day.  This has been corrected.

4.  Several access violation bugs have been fixed.

5.  Checks have been added to Diskeeper 4.0 to prevent it 
    from running on Windows NT 5.0.  This is because Diskeeper 
    does not currently support the new NTFS and FAT32 file 
    systems.

6.  Checks have been added to prevent Diskeeper 4.0 from 
    running on FAT32 partitions under Windows NT 4.0.

7.  Changes have been made to allow Diskeeper to release memory 
    that was previously used for the graphic display.

8.  The Boot-Time Directory Consolidation feature now supports 
    removable media with cluster sizes up to and including 4096 
    bytes.

9.  The opening splash screen now displays correctly in 256 
    color mode.

10. The technique used by Diskeeper to create the disk partition
    list has been changed.  This eliminates problems on portable
    computers requiring the floppy drive to be installed.  This
    problem was reported largely by users of the Compaq Armada
    7800 series of laptop computers.


KNOWN INCOMPATIBILITIES IN THIS RELEASE
=======================================

1.  Diskeeper 4.1 is designed to seamlessly install over an 
    existing Diskeeper 3.0 installation.  However, if you have
    previously installed Diskeeper 2.0 or Diskeeper Lite, 
    uninstall the earlier version before installing Diskeeper 4.1.
    After uninstalling the earlier version, also delete the 
    folders where it resided and any files that may remain after
    the uninstallation process.

2.  Diskeeper for Windows NT is not compatible with systems 
    using the DPT Smart Cache III controller, unless Service 
    Pack 1, 2 or 3 for Windows NT 4.0  has been installed.  Do 
    not run Diskeeper on systems using the DPT Smart Cache 
    III controller until you install Service Pack 1, 2 or 3 on 
    your Windows NT system.

3.  The on-screen Diskeeper Boot-time Defragmentation 
    progress information cannot be viewed on your monitor if 
    you are using a Diamond Stealth Viper video card or any 
    other video card that does not support Windows NT boot-time 
    display.  Similar problems have also been noted on several
    NEC computer systems, notably the PC-98 series.  

    You can still, however, record a summary file during the 
    Boot-Time Directory Consolidation.  See the Diskeeper Help 
    system for more information on the Boot-Time Summary File.

4.  Diskeeper 4.1 may not be compatible with anti-virus products
    that check each file when the file is opened.  This behavior,
    found in McAfee and Norton anti-virus tools (as well as 
    others), has occasionally been reported to conflict with the 
    file movement methods used by Diskeeper.  To prevent a Windows
    NT "bug check" crash, it may be necessary to disable the 
    "active file scan" options of these products during a 
    defragmentation run.

5.  Scheduled Diskeeper defragmentation jobs will not run 
    correctly on computers with power-saving "sleep" mode if the
    computer is "asleep" when the Diskeeper job is scheduled to
    begin.


KNOWN RESTRICTIONS IN THIS RELEASE
==================================

1.  At times, the View menu Refresh option to update the tree
    view of the network computers may not reflect the current
    network.  This is due to network communication limitations
    in Windows NT.

2.  You cannot use the Network Scheduler to schedule 
    defragmentation on a computer to which you are currently
    connected.  Use the Partition Scheduler option to schedule 
    defragmentation of partitions on the machine you are 
    connected to -- use the Network Scheduler option to 
    schedule machines you are not connected to.

    This means you must be connected to a machine other than
    your local computer (by clicking on a remote computer 
    in the Diskeeper network tree view display) if you want 
    to use the Network Scheduler to schedule your local 
    computer.

3.  Due to Windows NT security issues, it is necessary for you
    to have Administrator privileges on both the local machine
    and any remote computers upon which you set Diskeeper 
    schedules.  Your account on the remote computer must also
    have the same password as your account on the local machine.

4.  If a remote computer is shut down while Diskeeper Server is
    connected to that computer, you will be unable to re-connect 
    Diskeeper to any other computers, including your local 
    computer.  It may be necessary in such circumstances to use
    the Windows NT Task Manager to end the Diskeeper task.
    After doing this, Diskeeper will operate properly.

5.  On very large partitions, Diskeeper may be unable to analyze
    or defragment the files on the partition, due to memory 
    limitations.  The exact values for this are determined on a 
    case-by-case basis.  The size of the partition, the cluster
    size of the partition, the number of files, the degree of
    fragmentation, and other factors affect the amount of system
    memory used by Diskeeper.  For example, if a partition exceeds
    60 GB in size or contains more than 9 million files, system
    memory requirements can exceed 1 GB. 

6.  Prior to physically removing a hard drive from your computer,
    stop any Set It and Forget It defragmentation jobs that are
    scheduled for the partition(s) on the drive you are removing.

7.  Devices supporting removable media should have the proper
    media loaded when starting and stopping Diskeeper.  This is 
    particularly true if Set It and Forget It defragmentation
    jobs have been scheduled for the removable media.


REQUIRED PRIVILEGES
===================

You must be a member of the Administrators group to install and 
operate Diskeeper.  Attempting to run Diskeeper from a 
non-administrator account will cause the Diskeeper GUI to hang
and may require a system re-boot to correct.


INSTALLING DISKEEPER 
====================

Note:  Install Diskeeper into a different directory folder than
the folder you are installing from.  

Follow these steps to install Diskeeper:

1.  From Windows NT Explorer or File Manager, double click 
    SETUP.EXE in the directory where this text file resides.

2.  Read the information displayed in the Setup Installation 
    Wizard boxes and click "Next" as appropriate.

3.  In the "Choose Destination Location" dialog box, either 
    accept the default installation location, or click
    "Browse" to specify a different disk and/or directory.  
    If you specify a directory that does not exist, the setup 
    program will create it for you.  Click "Next" after 
    specifying a disk and directory, or to accept the default 
    installation location.

4.  The installation offers you the opportunity to register
    Diskeeper on Executive Software's Web Site.

5.  After a short period of copying files, the installation is 
    complete.


UNINSTALLING DISKEEPER
======================

Follow these steps to remove Diskeeper from your computer:

1.  From Control Panel, double click "Add/Remove Programs".

2.  Click the "Install/Uninstall" tab.

3.  Highlight "Diskeeper".

4.  Click "Add/Remove".  This removes the Diskeeper program 
    files from your computer.

5.  It may be necessary to manually delete the Diskeeper 
    installation directory.




(c) Copyright 1997 - 1999 Executive Software International, Inc.  
    All rights reserved.

Diskeeper and Executive Software are registered trademarks 
owned by Executive Software International, Inc.

Microsoft and Windows NT are registered trademarks owned by 
Microsoft Corporation.

All other trademarks are the property of their respective owners.