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When you attempt to compress a drive using DriveSpace 3, you may receive the following error message: Drive X: cannot be compressed because its root directory is too large. IDNUMBER: DRVSPACE748 This error message occurs because the root folder of...

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Microsoft Knowledge Base Article

This article contents is Microsoft Copyrighted material.
©2005-©2007 Microsoft Corporation. All rights reserved. Terms of Use | Trademarks

Article ID: 226870 - Last Review: January 24, 2007 - Revision: 1.2

Error Message: Drive Cannot Be Compressed...DRVSPACE 748

System TipThis article applies to a different version of Windows than the one you are using. Content in this article may not be relevant to you. Visit the Windows Vista Solution Center
This article was previously published under Q226870

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SYMPTOMS

When you attempt to compress a drive using DriveSpace 3, you may receive the following error message:
Drive X: cannot be compressed because its root directory is too large. IDNUMBER: DRVSPACE748

CAUSE

This error message occurs because the root folder of the drive is capable of holding more than 512 entries. This can occur under any of the following conditions:
  • A third-party disk partitioning utility was used to partition the drive.
  • A utility was used to convert the drive to the FAT32 file system and then back to the FAT16 file system.
  • The drive was created from a drive image that had the drive properties set incorrectly.

RESOLUTION

To resolve this problem, use one of the following methods.

Method 1

Use the third-party disk partitioning utility to set the partition with the following properties:
   Partition size: <2 GB
   File system: FAT16
   Root folder size: 512 entries
  
   Partition size    Cluster size
   ------------------------------
   1 GB - 2 GB           32 KB
   512 MB - 1 GB         16 KB
   256 MB - 511 MB        8 KB
   32 MB - 255 MB         4 KB
				
For information about how to use your disk partitioning software, please consult the software's documentation or manufacturer.

Method 2

Remove and re-create the partition using the Fdisk utility.

Note that formatting alone does not correct the problem.

STATUS

This behavior is by design.

APPLIES TO
  • Microsoft Windows 98 Standard Edition
Keywords: 
kberrmsg kbprb KB226870
       

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