*******************************************************************************
* *
* This is an update to an existing patch... *
* *
* Online links can be found at *
* http://ftp.support.compaq.com/patches/public/vms/axp/v7.1/alpdv01_071.README
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TITLE: OpenVMS ALPDV01_071 Alpha V7.1 - V7.1-1H2 DVDRIVER ECO Summary
 
New Kit Date: 13-NOV-2000
Modification Date: 12-APR-2001
Modification Type: Corrected typographical error. If this kit has
                    already been installed, there is no need to
                    install it again.

NOTE: An OpenVMS saveset or PCSI installation file is stored
       on the Internet in a self-expanding compressed file.
 
       For OpenVMS savesets, the name of the compressed saveset
       file will be kit_name.a-dcx_vaxexe for OpenVMS VAX or
       kit_name.a-dcx_axpexe for OpenVMS Alpha. Once the OpenVMS
       saveset is copied to your system, expand the compressed
       saveset by typing RUN kitname.dcx_vaxexe or kitname.dcx_alpexe.
 
       For PCSI files, once the PCSI file is copied to your system,
       rename the PCSI file to kitname-dcx_axpexe.pcsi, then it can
       be expanded by typing RUN kitname-dcx_axpexe.pcsi. The resultant
       file will be the PCSI installation file which can be used to install
       the ECO.
 
Copyright (c) Compaq Computer Corporation 2000. All rights reserved.

OP/SYS: OpenVMS Alpha

COMPONENT: DVDriver

SOURCE: Compaq Computer Corporation

ECO INFORMATION:

     ECO Kit Name: ALPDV01_071
     ECO Kits Superseded by This ECO Kit: None
     ECO Kit Approximate Size: 252 Blocks
     Kit Applies To: OpenVMS Alpha V7.1, V7.1-1H1, V7.1-1H2
     System/Cluster Reboot Necessary: Yes
     Rolling Re-boot Supported: Yes
     Installation Rating: INSTALL_2
                           2 - To be installed on all systems running
                               the listed version(s) of OpenVMS and
                               using the following feature(s):

                                 DS10, DS10L, ES40 AlphaServers, and
                                 XP900 and VS-10 AlphaStations

     Kit Dependencies:

       The following remedial kit(s) must be installed BEFORE

       installation of this kit:

         ALPBASE01_071
         ALPY2K01_071

       In order to receive all the corrections listed in this
       kit, the following remedial kits should also be installed:

         None

ECO KIT SUMMARY:

An ECO kit exists for DVDriver on OpenVMS Alpha V7.1 through V7.1-1H2.
This kit addresses the following problems:

  o Compaq has advised owners of DS10, DS10L, ES40 AlphaServers,
     and XP900 and VS-10 AlphaStations that Compaq has determined
     in laboratory testing that there is a theoretical possibility
     that during read and write operations to the floppy disk on
     these systems, a single byte of data may be inaccurately read
     or written without notice to the user or system. The
     potential for this anomaly exists only if floppy disk read or
     write operations are attempted while there is extremely heavy
     traffic on these Alpha system's internal input/output busses.

     Although Compaq has observed the anomaly only in laboratory
     tests designed to create atypical system stresses, including
     almost constant use of the floppy disk drive, Compaq has
     informed owners of the remote possibility that the anomaly
     could occur so that they may take precautions to prevent it.

     This ALPDV01_071 ECO kit implements a software solution
     for this condition.

       Images Affected: [SYS$LDR]SYS$DVDRIVER.EXE

INSTALLATION NOTES:

The images in this kit will not take effect until the system is
rebooted. If there are other nodes in the VMScluster, they must
also be rebooted in order to make use of the new image(s).

If it is not possible or convenient to reboot the entire cluster at
this time, a rolling re-boot may be performed.

All trademarks are the property of their respective owners.

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