Microsoft KB Archive/104544

= Cannot Uncompress Some Floppy Disks Without Removing Data =

Article ID: 104544

Article Last Modified on 11/21/1999

-

APPLIES TO


 * Microsoft MS-DOS 6.2 Standard Edition
 * Microsoft MS-DOS 6.22 Standard Edition

-



This article was previously published under Q104544



SYMPTOMS
This information applies to both Microsoft DoubleSpace and Microsoft DriveSpace. For MS-DOS 6.22, use DRVSPACE in place of DBLSPACE for commands and filenames.

If you compress a floppy disk and immediately try to uncompress the disk, you may receive the following error message:

DoubleSpace cannot uncompress drive because there is not enough space on drive to hold all of the uncompressed files.

To uncompress drive, you must remove at least  bytes of files from either drive.



CAUSE
This occurs because DoubleSpace is very conservative in estimating the space required to hold the uncompressed files. The estimate is based in part on a worst-case scenario in which the data on the floppy disk is stored at a 16:1 compression ratio and DoubleSpace must convert the drive from a 16-bit file allocation table (FAT) to a 12-bit FAT.



RESOLUTION
To work around this problem, remove  bytes of data from either the compressed drive or the host drive.

Additional query words: 6.20 diskette

Keywords: KB104544

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.