Microsoft KB Archive/90994

= File Manager Displays Actual Total Disk Space =

Article ID: 90994

Article Last Modified on 11/26/2003

-

APPLIES TO


 * Microsoft Windows for Workgroups 3.1
 * Microsoft Windows for Workgroups 3.11
 * Microsoft Windows NT Advanced Server 3.1
 * Microsoft Windows NT Workstation 3.1

-



This article was previously published under Q90994



SUMMARY
When you use Windows for Workgroups or Windows NT File Manager, the total disk size displayed in the status bar may differ from the specified formatted size of the disk.

For example:


 * 1.44 megabyte (MB) disks display as having 1.38 MB total space.
 * 1.2 MB disks display as having 1.15 MB total space.
 * 720 kilobyte (K) disks display as having 713K total space.



MORE INFORMATION
While these totals may seem incorrect, File Manager is actually displaying the exact amount of total disk space based on 1K actually being 1024 bytes and 1 megabyte being 1024K.

File Manager determines the amount of space on a disk by using the following formula:

(Allocation units * number of bytes in each allocation unit)/1024/1024

For example:

1.44 Disk: (2847*512)/1024/1024 = 1.39013671875 megabytes

NOTE: Microsoft Windows 3.1 File Manager displays total disk space in kilobytes rather than megabytes. As a result, 1.44 MB disks display as having 1.423K.

Additional query words: 3.1 3.11 win95 floppy winnt

Keywords: KB90994

-

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

© Microsoft Corporation. All rights reserved.