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November 10, 2009 12:00 AM

Q. How can I monitor the status of a command line defrag in Windows 7 and above?

Windows IT Pro
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A. The Windows 7 command line interface for the disk defragmenter has some new options that can help you track the progress and make the defrag run at a higher priority than normal so it finishes faster.

The /U switch displays an ongoing progress of the defragmentation progress, /C performs a defragmentation on all volumes on the system, and /E defrags all volumes except those specified. The /H switch runs the defragmentation at normal priority instead of low priority. The /M switch runs the defrag on the volumes in parallel and /T tracks an operation already in operation.

An example execution is shown below using the higher priority and ongoing progress display.

C:\Users\john>defrag d: /h /u
Microsoft Disk Defragmenter
Copyright (c) 2007 Microsoft Corp.

Invoking defragmentation on Data (D:)...

Analysis: 100% complete.

Pre-Defragmentation Report:

Volume Information:
Volume size = 1.36 TB
Free space = 587.31 GB
Total fragmented space = 0%
Largest free space size = 577.75 GB

Note: File fragments larger than 64MB are not
included in the fragmentation statistics.

Performing pass 1:
Defragmentation: 16% complete...
Related Reading:

Check out hundreds more useful Q&As like this in John Savill's FAQ for Windows. Also, watch instructional videos made by John at ITTV.net.

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