Microsoft small business knowledge base

Article ID: 98904 - Last Review: October 22, 2013 - Revision: 1.0

This article was previously published under Q98904
This article has been archived. It is offered "as is" and will no longer be updated.


Although Microsoft Defragmenter (Defrag) sorts directories and files, no detectable system activity occurs while Defrag is running. The Power and Advanced Power Management (APM) utilities may assume the system is idle and therefore suspend the system. Pressing the ESC key causes an interrupt, making the system resume its activities.


Defrag does not query for currently active Power or APM services. If the system goes into an idle state while Defrag is running, you should press the ESC key. Do NOT reboot or turn the machine off; doing so can lead to data corruption.

To prevent Power from interrupting Defrag, disable Power and APM services before running Defrag. Microsoft recommends that you run your laptop computer from an AC outlet when you run Defrag.

  • Microsoft MS-DOS 6.0 Standard Edition
  • Microsoft MS-DOS 6.2 Standard Edition
  • Microsoft MS-DOS 6.21 Standard Edition
  • Microsoft MS-DOS 6.22 Standard Edition
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