DOCUMENT:Q106522 22-NOV-1999 [msdos] TITLE :DoubleSpace Drive: Make Directory Results in Zero Bytes Free PRODUCT :Microsoft Disk Operating System PROD/VER:MS-DOS:6.0,6.2,6.22 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft MS-DOS operating system versions 6.0, 6.2, 6.22 ------------------------------------------------------------------------------- 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. SYMPTOMS ======== After MS-DOS reports you have several kilobytes (K) free on a DoubleSpace-compressed drive (for example, 128K with a 2:1 estimated compression ratio [ECR]), creating a directory results in zero bytes free disk space. CAUSE ===== DoubleSpace reserves some space when a compressed drive is nearly full. Specifically, when the free space in the compressed volume file drops below the 64K uncompressed boundary, DoubleSpace reserves the remaining space for its own use. For example, if your ECR is 2.0:1 and you have 130K "free" on your drive, you really have 65K left in uncompressed sectors. After you create a directory taking 16 sectors (8K), you have less than 64K free and uncompressed space. As a result, DoubleSpace reserves the remaining space for itself and reports zero bytes free disk space. Additional query words: 6.00 6.20 dir md mkdir small full cvf insufficient space available dblspace ====================================================================== Keywords : Technology : kbMSDOSSearch kbMSDOS622 kbMSDOS620 kbMSDOS600 Version : MS-DOS:6.0,6.2,6.22 ============================================================================= 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.