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Healthy Unknown Partition type present in Computer Management, Disk Management in Windows XP

Support for Windows XP has ended

Microsoft ended support for Windows XP on April 8, 2014. This change has affected your software updates and security options. Learn what this means for you and how to stay protected.

Author:
Joe Gronlund MVP
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SYMPTOMS
When you try to delete or format this partition, you receive an error message that this partition can not be deleted for formatted, as it is in current use.
CAUSE
The unknown partition is created when third party software, for example "Restore IT" is installed, the software creates an image of the operating system during shutdown onto the unknown partition and is being used by the software, you can not delete or format the partition from within Disk Management as it is in current use. 
RESOLUTION
This behavior is by design, the partition is there for Restore IT to use to store an image of your operating system, you can however remove the unknown partition by performing a complete clean install of Windows XP, removing the unknown partition and partition that Windows XP is installed onto, and use all the free space to install Windows XP onto.
MORE INFORMATION
Using Disk Management in Windows XP for basic disks -
Restore IT Information and Support -
Properties

Article ID: 555056 - Last Review: 02/12/2004 19:07:00 - Revision: 1.0

Microsoft Windows XP Professional, Microsoft Windows XP Home Edition, Microsoft Windows XP Professional, unknown KMS 9471

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