MS-BACKUP Err Msg: Cannot Read Volume From Virtual Memory... (99526)

The information in this article applies to:
    Microsoft MS-DOS operating system 6.0
    Microsoft MS-DOS operating system 6.2
    Microsoft MS-DOS operating system 6.22

This article was previously published under Q99526


You may receive the following error message when you try to restore files using Microsoft Backup:

Internal Error

Cannot read volume from virtual memory. 368, Disptree, virtual off, Mem=nnnn Register Version: 6.00.00 02/26/93 06:00 am


This error message indicates the data on the backup disks may be corrupted.


To work around this problem, delete the copy of the catalog file (xxxxxxxx.FUL, .INC, or .DIF) and try to rebuild (not restore) the catalog. The catalog file is located on the hard disk drive, usually in the DOS directory.

CAUTION: This problem may be caused by a hardware incompatibility with your system. Select the Verify Backup Data option for all subsequent backups.

Modification Type: Major Last Reviewed: 11/19/1999
Keywords: KB99526