Err Msg: Error Reading Partition Table with Stacker Disk (99449)

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 6.21
    Microsoft MS-DOS operating system 6.22

This article was previously published under Q99449


If you try to format a mounted STAC Electronics Stacker floppy disk using the MS-DOS FORMAT command, one of the following error messages may appear:
    Error reading partition table. Format terminated. -or-

    Extended error 21. Format terminated.


To work around this problem and format the disk, unmount the Stacker floppy disk with the following steps:
    Unmount the Stacker floppy disk by typing exit at the MS-DOS command prompt.

    NOTE: EXIT is a Stacker command that removes the Stacker terminate- and-stay-resident (TSR) program responsible for automatically mounting floppy disks.
    Type format <x>: where <x> is the floppy disk drive.
Stacker, is manufactured by STAC Electronics, a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding this product's performance or reliability.

Modification Type: Major Last Reviewed: 11/26/1999
Keywords: KB99449