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Hidden Partitions are Displayed by the Windows Disk Defragmenter Tool

Symptoms
In Microsoft Windows, you can change the behavior of the Disk Defragmenter tool, and select the disk (partition) that you want to defragment.After installing Windows, when you display the list of disks for defragmentation from [Select volume] in the Disk Defragmenter tool, hidden partitions that are not mounted are also displayed. Hidden partition volumes are displayed with the following name:

\\?\Volume{Number String}
Workaround
There is no problem when disk defragmentation is performed for volumes named "\\?\Volume{Number String}".
Status
This behavior is by design.
Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use for other considerations.

Properties

Article ID: 952910 - Last Review: 10/28/2015 03:04:00 - Revision: 2.0

Windows 7 Enterprise, Windows Vista Business, Windows Vista Business 64-bit Edition, Windows Vista Enterprise, Windows Vista Enterprise 64-bit Edition, Windows Vista Home Basic, Windows Vista Home Basic 64-bit Edition, Windows Vista Home Premium, Windows Vista Home Premium 64-bit Edition, Windows Vista Ultimate, Windows Vista Ultimate 64-bit Edition, Windows Vista Service Pack 1, Windows 8, Windows 8.1, Windows 10

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