The size of the GUID partition table (GPT) disk is not updated on a Windows Server 2008-based or a Windows Vista SP1-based computer after you use a disk management program to expand a logical unit number (LUN)

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Article ID: 950927 - View products that this article applies to.
Support for Windows Vista Service Pack 1 (SP1) ends on July 12, 2011. To continue receiving security updates for Windows, make sure you're running Windows Vista with Service Pack 2 (SP2). For more information, refer to this Microsoft web page: Support is ending for some versions of Windows.
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SYMPTOMS

Consider the following scenario:
  • You are running a Windows Server 2008-based or a Windows Vista Service Pack 1 (SP1)-based computer.
  • To provide additional space on the computer's hard disk, you run a disk management program to expand the size of a logical unit number (LUN).
In this scenario, the LUN size is not updated after you run the disk management program. This issue occurs if you use a computer that includes GUID partition table (GPT) disks.

Note A master boot record (MBR) disk does not experience this issue.

CAUSE

The Partmgr.sys system drive expands the size of a LUN on a GPT disk by forwarding IOCTL_DISK_GET_DRIVE_GEOMETRY_EX control code instead of the IOCTL_DISK_GET_PARTITION_INFO_EX control code that is used with an MBR disk. However, the IOCTL_DISK_GET_DRIVE_GEOMETRY_EX control code does not provide the updated information about the LUN size. Therefore, this issue occurs only with GPT disks.

RESOLUTION

Hotfix information for Windows Server 2008

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 this specific problem. 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:
http://support.microsoft.com/contactus/?ws=support
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.

Important Windows Vista and Windows Server 2008 hotfixes are included in the same packages. However, only one of these products may be listed on the “Hotfix Request” page. To request the hotfix package that applies to both Windows Vista and Windows Server 2008, just select the product that is listed on the page.

Prerequisites

To apply this hotfix, you must have Windows Server 2008 installed.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.
Windows Server 2008, x86-based versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Package_1_for_kb950927~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,77707-May-200823:53Not applicable
Package_2_for_kb950927~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,94407-May-200823:53Not applicable
Package_3_for_kb950927~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,78207-May-200823:53Not applicable
Package_4_for_kb950927~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,78207-May-200823:53Not applicable
Package_for_kb950927_client_1~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,36707-May-200823:53Not applicable
Package_for_kb950927_client~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,43107-May-200823:53Not applicable
Package_for_kb950927_sc_0~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42107-May-200823:53Not applicable
Package_for_kb950927_sc~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42307-May-200823:53Not applicable
Package_for_kb950927_server_0~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42507-May-200823:53Not applicable
Package_for_kb950927_server~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,43107-May-200823:53Not applicable
Package_for_kb950927_winpesrv_0~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42207-May-200823:53Not applicable
Package_for_kb950927_winpesrv~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42907-May-200823:53Not applicable
Update.mumNot applicable3,07707-May-200823:53Not applicable
X86_499a95cb559453eca465400ccb491cc0_31bf3856ad364e35_6.0.6001.22174_none_38e5b90ad50181a7.manifestNot applicable69707-May-200823:53Not applicable
X86_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6001.22174_none_6c72501fcd75db25.manifestNot applicable17,80607-May-200803:49Not applicable
Ntkrnlpa.exe6.0.6001.221743,601,46407-May-200803:23Not applicable
Ntoskrnl.exe6.0.6001.221743,549,24007-May-200803:23Not applicable
Windows Server 2008, x64-based versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Amd64_4dbdf1ab5e784bcd632342e66c28f05b_31bf3856ad364e35_6.0.6001.22174_none_ee2f0d96632013ab.manifestNot applicable70107-May-200823:53Not applicable
Amd64_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6001.22174_none_c890eba385d34c5b.manifestNot applicable16,51207-May-200805:00Not applicable
Package_1_for_kb950927~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,78707-May-200823:53Not applicable
Package_2_for_kb950927~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,95607-May-200823:53Not applicable
Package_3_for_kb950927~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,79207-May-200823:53Not applicable
Package_4_for_kb950927~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,79207-May-200823:53Not applicable
Package_for_kb950927_client_1~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,37507-May-200823:53Not applicable
Package_for_kb950927_client~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,43907-May-200823:53Not applicable
Package_for_kb950927_sc_0~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,42907-May-200823:53Not applicable
Package_for_kb950927_sc~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,43107-May-200823:53Not applicable
Package_for_kb950927_server_0~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,43307-May-200823:53Not applicable
Package_for_kb950927_server~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,43907-May-200823:53Not applicable
Package_for_kb950927_winpesrv_0~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,43007-May-200823:53Not applicable
Package_for_kb950927_winpesrv~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,43707-May-200823:53Not applicable
Update.mumNot applicable3,09907-May-200823:53Not applicable
Ntoskrnl.exe6.0.6001.221744,694,58407-May-200804:03x64
Windows Server 2008, Itanium-based versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Ia64_1694d5515e31de8b861141fc2c103d81_31bf3856ad364e35_6.0.6001.22174_none_ac7d85e510fc5a94.manifestNot applicable69907-May-200823:53Not applicable
Ia64_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6001.22174_none_6c73f415cd73e421.manifestNot applicable16,81907-May-200804:32Not applicable
Package_1_for_kb950927~31bf3856ad364e35~ia64~~6.0.1.0.mumNot applicable1,78207-May-200823:53Not applicable
Package_2_for_kb950927~31bf3856ad364e35~ia64~~6.0.1.0.mumNot applicable1,78707-May-200823:53Not applicable
Package_3_for_kb950927~31bf3856ad364e35~ia64~~6.0.1.0.mumNot applicable1,78707-May-200823:53Not applicable
Package_for_kb950927_sc_0~31bf3856ad364e35~ia64~~6.0.1.0.mumNot applicable1,42507-May-200823:53Not applicable
Package_for_kb950927_sc~31bf3856ad364e35~ia64~~6.0.1.0.mumNot applicable1,42607-May-200823:53Not applicable
Package_for_kb950927_server_0~31bf3856ad364e35~ia64~~6.0.1.0.mumNot applicable1,42907-May-200823:53Not applicable
Package_for_kb950927_server~31bf3856ad364e35~ia64~~6.0.1.0.mumNot applicable1,43407-May-200823:53Not applicable
Package_for_kb950927_winpesrv_0~31bf3856ad364e35~ia64~~6.0.1.0.mumNot applicable1,42607-May-200823:53Not applicable
Package_for_kb950927_winpesrv~31bf3856ad364e35~ia64~~6.0.1.0.mumNot applicable1,43307-May-200823:53Not applicable
Update.mumNot applicable2,42307-May-200823:53Not applicable
Ntoskrnl.exe6.0.6001.221749,501,75207-May-200803:57IA-64

Hotfix information for Windows Vista SP1

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 this specific problem. 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:
http://support.microsoft.com/contactus/?ws=support
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 have Windows Vista Service Pack 1 installed.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.
Windows Vista SP1, x86-based versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Package_1_for_kb950927~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,77707-May-200823:53Not applicable
Package_2_for_kb950927~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,94407-May-200823:53Not applicable
Package_3_for_kb950927~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,78207-May-200823:53Not applicable
Package_4_for_kb950927~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,78207-May-200823:53Not applicable
Package_for_kb950927_client_1~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,36707-May-200823:53Not applicable
Package_for_kb950927_client~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,43107-May-200823:53Not applicable
Package_for_kb950927_sc_0~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42107-May-200823:53Not applicable
Package_for_kb950927_sc~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42307-May-200823:53Not applicable
Package_for_kb950927_server_0~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42507-May-200823:53Not applicable
Package_for_kb950927_server~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,43107-May-200823:53Not applicable
Package_for_kb950927_winpesrv_0~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42207-May-200823:53Not applicable
Package_for_kb950927_winpesrv~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42907-May-200823:53Not applicable
Update.mumNot applicable3,07707-May-200823:53Not applicable
X86_499a95cb559453eca465400ccb491cc0_31bf3856ad364e35_6.0.6001.22174_none_38e5b90ad50181a7.manifestNot applicable69707-May-200823:53Not applicable
X86_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6001.22174_none_6c72501fcd75db25.manifestNot applicable17,80607-May-200803:49Not applicable
Ntkrnlpa.exe6.0.6001.221743,601,46407-May-200803:23Not applicable
Ntoskrnl.exe6.0.6001.221743,549,24007-May-200803:23Not applicable
Windows Vista SP1, x64-based versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Amd64_4dbdf1ab5e784bcd632342e66c28f05b_31bf3856ad364e35_6.0.6001.22174_none_ee2f0d96632013ab.manifestNot applicable70107-May-200823:53Not applicable
Amd64_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6001.22174_none_c890eba385d34c5b.manifestNot applicable16,51207-May-200805:00Not applicable
Package_1_for_kb950927~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,78707-May-200823:53Not applicable
Package_2_for_kb950927~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,95607-May-200823:53Not applicable
Package_3_for_kb950927~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,79207-May-200823:53Not applicable
Package_4_for_kb950927~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,79207-May-200823:53Not applicable
Package_for_kb950927_client_1~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,37507-May-200823:53Not applicable
Package_for_kb950927_client~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,43907-May-200823:53Not applicable
Package_for_kb950927_sc_0~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,42907-May-200823:53Not applicable
Package_for_kb950927_sc~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,43107-May-200823:53Not applicable
Package_for_kb950927_server_0~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,43307-May-200823:53Not applicable
Package_for_kb950927_server~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,43907-May-200823:53Not applicable
Package_for_kb950927_winpesrv_0~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,43007-May-200823:53Not applicable
Package_for_kb950927_winpesrv~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,43707-May-200823:53Not applicable
Update.mumNot applicable3,09907-May-200823:53Not applicable
Ntoskrnl.exe6.0.6001.221744,694,58407-May-200804:03x64
Windows Vista SP1, IA-64 versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Ia64_1694d5515e31de8b861141fc2c103d81_31bf3856ad364e35_6.0.6001.22174_none_ac7d85e510fc5a94.manifestNot applicable69907-May-200823:53Not applicable
Ia64_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6001.22174_none_6c73f415cd73e421.manifestNot applicable16,81907-May-200804:32Not applicable
Package_1_for_kb950927~31bf3856ad364e35~ia64~~6.0.1.0.mumNot applicable1,78207-May-200823:53Not applicable
Package_2_for_kb950927~31bf3856ad364e35~ia64~~6.0.1.0.mumNot applicable1,78707-May-200823:53Not applicable
Package_3_for_kb950927~31bf3856ad364e35~ia64~~6.0.1.0.mumNot applicable1,78707-May-200823:53Not applicable
Package_for_kb950927_sc_0~31bf3856ad364e35~ia64~~6.0.1.0.mumNot applicable1,42507-May-200823:53Not applicable
Package_for_kb950927_sc~31bf3856ad364e35~ia64~~6.0.1.0.mumNot applicable1,42607-May-200823:53Not applicable
Package_for_kb950927_server_0~31bf3856ad364e35~ia64~~6.0.1.0.mumNot applicable1,42907-May-200823:53Not applicable
Package_for_kb950927_server~31bf3856ad364e35~ia64~~6.0.1.0.mumNot applicable1,43407-May-200823:53Not applicable
Package_for_kb950927_winpesrv_0~31bf3856ad364e35~ia64~~6.0.1.0.mumNot applicable1,42607-May-200823:53Not applicable
Package_for_kb950927_winpesrv~31bf3856ad364e35~ia64~~6.0.1.0.mumNot applicable1,43307-May-200823:53Not applicable
Update.mumNot applicable2,42307-May-200823:53Not applicable
Ntoskrnl.exe6.0.6001.221749,501,75207-May-200803:57IA-64

MORE INFORMATION

For more information about IOCTL_DISK_GET_PARTITION_INFO_EX control code, visit the following Microsoft Web site:
http://msdn.microsoft.com/en-us/library/aa365180(VS.85).aspx
For more information about IOCTL_DISK_GET_DRIVE_GEOMETRY_EX control code, visit the following Microsoft Web site:
http://msdn.microsoft.com/en-us/library/aa365171(vs.85).aspx

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

Properties

Article ID: 950927 - Last Review: June 10, 2011 - Revision: 3.2
APPLIES TO
  • Windows Server 2008 Datacenter
  • Windows Server 2008 Enterprise
  • Windows Server 2008 Standard
  • Windows Server 2008 for Itanium-Based Systems
  • Windows Server 2008 Datacenter without Hyper-V
  • Windows Server 2008 Enterprise without Hyper-V
  • Windows Server 2008 Standard without Hyper-V
  • Windows Vista Service Pack 1
Keywords: 
kbautohotfix kbexpertiseadvanced kbHotfixServer kbqfe KB950927

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