Disk Manager reports incorrect disk usage a while after the operating system starts in Windows Server 2008 or in Windows Vista

SYMPTOMS
On a computer that is running Windows Server 2008 or Windows Vista, Disk Manager may report incorrect disk usage a while after the operating system starts. The Disk Free Space value is reported to be larger than the total disk space.

For example, assume that you install a 900 GB (gigabyte) hard disk on a computer that is running Windows Server 2008. In this scenario, Disk Manager reports the correct disk usage after you restart the computer. However, Disk Manager reports an incorrect disk usage after a while. The incorrect disk usage may include a Disk Free Space value that is over 1500 GB.
CAUSE
This issue occurs because the NTFS file system incorrectly adjusts the amount of free disk space in the volume control block (VCB) when the clusters are allocated or deallocated.
RESOLUTION

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must be running one of the following operating systems:
  • Windows Vista Service Pack 1 (SP1)
  • Windows Vista Service Pack 2 (SP2)
  • Windows Server 2008
  • Windows Server 2008 Service Pack 2 (SP2)
For more information about how to obtain a Windows Vista service pack, click the following article number to view the article in the Microsoft Knowledge Base:
935791 How to obtain the latest Windows Vista service pack
For more information about how to obtain a Windows Server 2008 service pack, click the following article number to view the article in the Microsoft Knowledge Base:
968849 How to obtain the latest service pack for Windows Server 2008
To use the hotfix, you do not have to make any changes to the registry.

Restart requirement

You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The global version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.
Windows Vista and Windows Server 2008 file information notes
Important Windows Vista hotfixes and Windows Server 2008 hotfixes are included in the same packages. However, only "Windows Vista" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows Vista" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.
  • The files that apply to a specific product, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.
    VersionProductSR_LevelService branch
    6.0.600 1. 22xxxWindows Vista and Windows Server 2008SP1LDR
    6.0.600 2. 22xxxWindows Vista and Windows Server 2008SP2LDR
  • Service Pack 1 is integrated into the release version of Windows Server 2008. Therefore, RTM milestone files apply only to Windows Vista. RTM milestone files have a 6.0.0000.xxxxxx version number.
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows Server 2008 and for Windows Vista" section. MUM files and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintaining the state of the updated component. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.
For all supported x86-based versions of Windows Server 2008 and of Windows Vista
File nameFile versionFile sizeDateTimePlatform
Ntfs.sys6.0.6002.224411,081,74407-Jul-201023:39x86
For all supported x64-based versions of Windows Server 2008 and of Windows Vista
File nameFile versionFile sizeDateTimePlatform
Ntfs.sys6.0.6002.224411,504,65607-Jul-201023:35x64
For all supported IA-64-based versions of Windows Server 2008
File nameFile versionFile sizeDateTimePlatform
Ntfs.sys6.0.6002.224413,282,32007-Jul-201023:31IA-64
WORKAROUND
To work around this issue, run the chkdsk command to check the disk space usage.
STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
MORE INFORMATION
For more information about the incorrectly reported available space in the NTFS file system, view the following Microsoft Developer Network (MSDN) website:For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional file information

Additional file information for Windows Vista and for Windows Server 2008

Additional files for all supported x86-based versions of Windows Vista and of Windows Server 2008
File namePackage_1_for_kb981891~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot applicable
File size2,427
Date (UTC)07-Jul-2010
Time (UTC)23:42
PlatformNot applicable
File namePackage_2_for_kb981891~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot applicable
File size2,265
Date (UTC)07-Jul-2010
Time (UTC)23:42
PlatformNot applicable
File namePackage_3_for_kb981891~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot applicable
File size2,265
Date (UTC)07-Jul-2010
Time (UTC)23:42
PlatformNot applicable
File namePackage_for_kb981891_client_2~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot applicable
File size1,693
Date (UTC)07-Jul-2010
Time (UTC)23:42
PlatformNot applicable
File namePackage_for_kb981891_client~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot applicable
File size1,430
Date (UTC)07-Jul-2010
Time (UTC)23:42
PlatformNot applicable
File namePackage_for_kb981891_sc_1~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot applicable
File size1,689
Date (UTC)07-Jul-2010
Time (UTC)23:42
PlatformNot applicable
File namePackage_for_kb981891_sc~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot applicable
File size1,422
Date (UTC)07-Jul-2010
Time (UTC)23:42
PlatformNot applicable
File namePackage_for_kb981891_server_1~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot applicable
File size1,693
Date (UTC)07-Jul-2010
Time (UTC)23:42
PlatformNot applicable
File namePackage_for_kb981891_server~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot applicable
File size1,430
Date (UTC)07-Jul-2010
Time (UTC)23:42
PlatformNot applicable
File nameX86_3960916b160d323802ac254df978dc89_31bf3856ad364e35_6.0.6002.22441_none_7d56b4dc892f9350.manifest
File versionNot applicable
File size692
Date (UTC)07-Jul-2010
Time (UTC)23:42
PlatformNot applicable
File nameX86_microsoft-windows-ntfs_31bf3856ad364e35_6.0.6002.22441_none_a8b7046e334f0686.manifest
File versionNot applicable
File size16,841
Date (UTC)07-Jul-2010
Time (UTC)23:43
PlatformNot applicable
Additional files for all supported x64-based versions of Windows Vista and of Windows Server 2008
File nameAmd64_7277a67b77dcef7eb4bf1a7d92c89d7d_31bf3856ad364e35_6.0.6002.22441_none_b23dbf73b8c2ffc2.manifest
File versionNot applicable
File size696
Date (UTC)07-Jul-2010
Time (UTC)23:43
PlatformNot applicable
File nameAmd64_microsoft-windows-ntfs_31bf3856ad364e35_6.0.6002.22441_none_04d59ff1ebac77bc.manifest
File versionNot applicable
File size17,104
Date (UTC)07-Jul-2010
Time (UTC)23:43
PlatformNot applicable
File namePackage_1_for_kb981891~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot applicable
File size2,445
Date (UTC)07-Jul-2010
Time (UTC)23:43
PlatformNot applicable
File namePackage_2_for_kb981891~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot applicable
File size2,281
Date (UTC)07-Jul-2010
Time (UTC)23:43
PlatformNot applicable
File namePackage_3_for_kb981891~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot applicable
File size2,281
Date (UTC)07-Jul-2010
Time (UTC)23:43
PlatformNot applicable
File namePackage_for_kb981891_client_2~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot applicable
File size1,705
Date (UTC)07-Jul-2010
Time (UTC)23:43
PlatformNot applicable
File namePackage_for_kb981891_client~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot applicable
File size1,438
Date (UTC)07-Jul-2010
Time (UTC)23:43
PlatformNot applicable
File namePackage_for_kb981891_sc_1~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot applicable
File size1,701
Date (UTC)07-Jul-2010
Time (UTC)23:43
PlatformNot applicable
File namePackage_for_kb981891_sc~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot applicable
File size1,430
Date (UTC)07-Jul-2010
Time (UTC)23:43
PlatformNot applicable
File namePackage_for_kb981891_server_1~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot applicable
File size1,705
Date (UTC)07-Jul-2010
Time (UTC)23:43
PlatformNot applicable
File namePackage_for_kb981891_server~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot applicable
File size1,438
Date (UTC)07-Jul-2010
Time (UTC)23:43
PlatformNot applicable
Additional files for all supported IA-64-based versions of Windows Server 2008
File nameIa64_4388a17a37d3877e6ba67108e73a14fe_31bf3856ad364e35_6.0.6002.22441_none_1df173c84c6ea39a.manifest
File versionNot applicable
File size694
Date (UTC)07-Jul-2010
Time (UTC)23:42
PlatformNot applicable
File nameIa64_microsoft-windows-ntfs_31bf3856ad364e35_6.0.6002.22441_none_a8b8a864334d0f82.manifest
File versionNot applicable
File size17,096
Date (UTC)07-Jul-2010
Time (UTC)23:43
PlatformNot applicable
File namePackage_1_for_kb981891~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot applicable
File size2,107
Date (UTC)07-Jul-2010
Time (UTC)23:42
PlatformNot applicable
File namePackage_2_for_kb981891~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot applicable
File size2,107
Date (UTC)07-Jul-2010
Time (UTC)23:42
PlatformNot applicable
File namePackage_for_kb981891_sc_1~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot applicable
File size1,529
Date (UTC)07-Jul-2010
Time (UTC)23:42
PlatformNot applicable
File namePackage_for_kb981891_sc~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot applicable
File size1,426
Date (UTC)07-Jul-2010
Time (UTC)23:42
PlatformNot applicable
File namePackage_for_kb981891_server_1~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot applicable
File size1,533
Date (UTC)07-Jul-2010
Time (UTC)23:42
PlatformNot applicable
File namePackage_for_kb981891_server~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot applicable
File size1,434
Date (UTC)07-Jul-2010
Time (UTC)23:42
PlatformNot applicable
Properties

Article ID: 981891 - Last Review: 08/12/2010 08:32:00 - Revision: 2.0

Windows Vista Business, Windows Vista Business 64-bit Edition, Windows Vista Enterprise, Windows Vista Home Basic, Windows Vista Home Premium, Windows Vista Starter, Windows Vista Ultimate, Windows Vista Enterprise 64-bit Edition, Windows Vista Home Basic 64-bit Edition, Windows Vista Home Premium 64-bit Edition, Windows Vista Ultimate 64-bit Edition, Windows Server 2008 Datacenter without Hyper-V, Windows Server 2008 Enterprise without Hyper-V, Windows Server 2008 for Itanium-Based Systems, Windows Server 2008 Standard without Hyper-V, Windows Server 2008 Datacenter, Windows Server 2008 Enterprise, Windows Server 2008 Standard

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