DOCUMENT:Q107711 25-NOV-1999 [msdos] TITLE :ScanDisk Reports Compressed Floppy Too Full for Undo PRODUCT :Microsoft Disk Operating System PROD/VER:MS-DOS:6.2 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft MS-DOS operating system version 6.2 ------------------------------------------------------------------------------- SYMPTOMS ======== When ScanDisk finds errors, it prompts you to create an Undo disk before correcting the errors. (You also have the option to skip the Undo disk step.) If you choose to create an Undo disk, you must save the information to a floppy disk. If you insert a disk that has been compressed by DoubleSpace, the following message may appear The disk in drive is too full to be used as an Undo disk. To ensure that there is enough room for all the Undo information, make sure the floppy disk has at least 300,000 bytes of free space. where drive is the DoubleSpace-compressed floppy disk. CAUSE ===== ScanDisk cannot mount a compressed disk for use as the Undo disk, even if Automount is enabled in DoubleSpace Manager. RESOLUTION ========== Before you run ScanDisk, be sure the potential Undo disk is mounted. The compressed floppy disk must be inserted in the disk drive prior to starting ScanDisk. Any action (such as DIR or CHKDSK) you run on that floppy disk drive causes the system to mount the disk. ScanDisk then recognizes the compressed free space on that disk. STATUS ====== This situation does not occur in MS-DOS version 6.22. DriveSpace functionality was enhanced to correctly deal with ScanDisk Undo disk. Additional query words: dblspace 6.20 insufficient disk enough ====================================================================== Keywords : Technology : kbMSDOSSearch kbMSDOS620 Version : MS-DOS:6.2 ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 1999.