Article: Q113775
Product(s): Microsoft Disk Operating System
Version(s): MS-DOS:6.21
Operating System(s):
Keyword(s):
Last Modified: 20-NOV-1999
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The information in this article applies to:
- Microsoft MS-DOS operating system version 6.21
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SYMPTOMS
========
When you use an original equipment manufacturer (OEM) version of Microsoft
MS-DOS 6.21 Backup to restore backups created with an earlier version of
Microsoft Backup, you receive one of the following error messages:
MS-DOS 6.21 Backup (MS-DOS-Based Version)
-----------------------------------------
Critical Error
Cannot retrieve catalog <filename> from disk #1 in drive A.
-or-
Alert
Compression failure within <filename>.
MS-DOS 6.21 Backup for Windows
------------------------------
The compression header for the catalog is corrupt. Use rebuild to reconstruct
the catalog.
-or-
The file <filename> could not be properly restored. Do you want to skip
this file?
-or-
The compression header for the file <filename> is corrupt. Restore
cannot process this file and must stop.
-or-
Cannot recover data from damaged diskette using error correction (ECC)
NOTE: This message is displayed when you try to retrieve or rebuild the backup
catalog.
CAUSE
=====
Compression code was removed from Microsoft Backup in MS-DOS 6.21. When you use
Microsoft Backup 6.21 to restore backups made with compression turned on, you
receive the errors noted above.
RESOLUTION
==========
If you are restoring backups made on another computer, re-create the backups
with compression turned off.
If you cannot re-create the backups, use the MS-DOS Expand utility (EXPAND.EXE)
to expand the required files (using the table below for reference) from the
original MS-DOS 6.0 or 6.2 disks.
Files Required for Microsoft Backup (MS-DOS-Based Version)
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MSBACKDB.OVL
MSBACKDR.OVL
MSBACKFB.OVL
MSBACKFR.OVL
MSBACKUP.EX_ MSBACKUP.EXE
MSBACKUP.HL_ MSBACKUP.HLP
MSBACKUP.OVL
MSBCONFG.HL_ MSBCONFG.HLP
MSBCONFG.OVL
Files Required for Microsoft Backup for Windows
-----------------------------------------------
MWBACKF.DL_ MWBACKF.DLL
MWBACKR.DL_ MWBACKR.DLL
MWBACKUP.EX_ MWBACKUP.EXE
MWBACKUP.HL_ MWBACKUP.HLP
MWGRAFIC.DL_ MWGRAFIC.DLL
VFINTD.38_ VFINTD.386
MORE INFORMATION
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To change the compression setting in Microsoft Backup 6.0 or 6.2:
1. Choose Backup.
2. Choose Options.
3. Clear the Compress Backup Data check box.
4. Choose OK.
Additional query words: 6.22 6.0 6.00 6.2 6.20 6.21 stop cancel restore ok yes no skip recreate
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Keywords :
Technology : kbMSDOSSearch kbMSDOS621
Version : MS-DOS:6.21
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