ChkDsk may hang when checking a GPT Disk inside a Hyper-V Virtual Machine

Article ID: 2551270 - View products that this article applies to.
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SYMPTOMS

You are using Serial Attached SCSI (SAS) Storage to provide volumes for Hyper-V Virtual Machines. When the volume has a size over 2 TB you are required to create this as a GPT Disk. You attach this disk to a Hyper-V Virtual Machine using the virtual SCSI Adapter.

You may experience a problem when the Volume is automatically checked during start of the VM by chkdsk, or when you manually start a chkdsk against such a volume. Chkdsk may hang in this scenario.

CAUSE

We are currently investigating this isse.

WORKAROUND

To workaround this problem, connect the SAS Passthrough disk to a Virtual IDE Channel instead.
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.

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Article ID: 2551270 - Last Review: May 25, 2011 - Revision: 1.0
APPLIES TO
  • Windows Server 2008 R2 Datacenter
  • Windows Server 2008 R2 Enterprise
  • Windows Server 2008 R2 Service Pack 1
  • Windows Server 2008 R2 Standard
Keywords: 
KB2551270

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