Windows Server 2008 cannot be installed or started on a computer that has one terabyte or more of RAM

Symptoms

Consider the following scenario:

  • You install one terabyte or more of memory on a computer. For example, you have a computer that contains 64 memory slots, and each memory slot has 16 gigabytes (GB) of random access memory (RAM).

  • You try to install or to start an x64-based version of Windows Server 2008 on the computer.

In this scenario, you cannot install or start the x64-based version of Windows Server 2008 on the computer.

Cause

This issue occurs because the computer stores information at some physical addresses that are beyond the one-terabyte address. These physical addresses are more than 40 bits long. When these physical addresses are mapped to the page tables for Windows, they are truncated to 28 bits to comply with the definition for a page-table entry. This behavior prevents the installation or startup of an x64-based version of Windows Server 2008.

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 website:

http://support.microsoft.com/contactus/?ws=supportNote 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 Windows Server 2008 Service Pack 2 (SP2).


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

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 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 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 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 very important for maintaining the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

For all supported x64-based versions of Windows Server 2008

File name

File version

File size

Date

Time

Platform

Hal.dll

6.0.6002.22497

231,312

01-Oct-2010

00:35

x64

Setbcdlocale.dll

6.0.6002.22497

58,368

30-Sep-2010

16:43

x64

Winload.efi

6.0.6002.22497

1,077,136

30-Sep-2010

22:34

Not applicable

Winload.exe

6.0.6002.22497

1,063,824

30-Sep-2010

22:34

x64

Winresume.efi

6.0.6002.22497

991,632

30-Sep-2010

22:34

Not applicable

Winresume.exe

6.0.6002.22497

980,368

30-Sep-2010

22:34

x64

Bootmgfw.efi

6.0.6002.22497

549,264

01-Oct-2010

00:35

Not applicable

Bootmgr.efi

6.0.6002.22497

545,680

01-Oct-2010

00:35

Not applicable

Winload.efi

6.0.6002.22497

1,077,136

30-Sep-2010

22:34

Not applicable

Winload.exe

6.0.6002.22497

1,063,824

30-Sep-2010

22:34

x64

Winresume.efi

6.0.6002.22497

991,632

30-Sep-2010

22:34

Not applicable

Winresume.exe

6.0.6002.22497

980,368

30-Sep-2010

22:34

x64

Bootmgfw.efi

6.0.6002.22497

549,264

01-Oct-2010

00:35

Not applicable

Ntoskrnl.exe

6.0.6002.22497

4,688,272

01-Oct-2010

00:35

x64

Abortpxe.com

Not applicable

79

04-Apr-2009

05:53

Not applicable

Bootmgr.exe

6.0.6002.22497

443,792

01-Oct-2010

00:35

x86

Hdlscom1.com

Not applicable

25,980

03-Apr-2009

20:59

Not applicable

Hdlscom1.n12

Not applicable

25,964

03-Apr-2009

20:59

Not applicable

Hdlscom2.com

Not applicable

25,980

03-Apr-2009

20:59

Not applicable

Hdlscom2.n12

Not applicable

25,964

03-Apr-2009

20:59

Not applicable

Pxeboot.com

Not applicable

25,676

03-Apr-2009

20:59

Not applicable

Pxeboot.n12

Not applicable

25,676

03-Apr-2009

20:59

Not applicable

Wdsnbp.com

Not applicable

27,954

04-Apr-2009

05:53

Not applicable


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 a similar issue in Windows Server 2008 R2, click the following article number to view the article in the Microsoft Knowledge Base:

980598 Windows Server 2008 R2 cannot be installed or started on a computer that has 1 TB or more of RAM
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 Server 2008

Additional files for all supported x64-based versions of Windows Server 2008

File name

Amd64_44cdeec60e06f0add5b5f5a9b2cc91ea_31bf3856ad364e35_6.0.6002.22497_none_1b729f5c64ab31ee.manifest

File version

Not applicable

File size

701

Date (UTC)

05-Oct-2010

Time (UTC)

10:33

Platform

Not applicable

File name

Amd64_5a1f7be2295fd71e167e6c83b7aafa74_31bf3856ad364e35_6.0.6002.22497_none_ac155a3eb357d3d1.manifest

File version

Not applicable

File size

715

Date (UTC)

05-Oct-2010

Time (UTC)

10:33

Platform

Not applicable

File name

Amd64_766efb1ce2ddac9457f0f39eb3159aad_31bf3856ad364e35_6.0.6002.22497_none_d43c461b8af820c6.manifest

File version

Not applicable

File size

728

Date (UTC)

05-Oct-2010

Time (UTC)

10:33

Platform

Not applicable

File name

Amd64_8074264fa8d225bdb1fadd1bac2f9e4b_31bf3856ad364e35_6.0.6002.22497_none_c40ad542752c2357.manifest

File version

Not applicable

File size

1,092

Date (UTC)

05-Oct-2010

Time (UTC)

10:33

Platform

Not applicable

File name

Amd64_c5f19ffd9ea1b978e21c68d407c67928_31bf3856ad364e35_6.0.6002.22497_none_7750b3176fa57756.manifest

File version

Not applicable

File size

717

Date (UTC)

05-Oct-2010

Time (UTC)

10:33

Platform

Not applicable

File name

Amd64_hal.inf_31bf3856ad364e35_6.0.6002.22497_none_6150787fd6d36578.manifest

File version

Not applicable

File size

1,656

Date (UTC)

05-Oct-2010

Time (UTC)

10:33

Platform

Not applicable

File name

Amd64_microsoft-windows-b..environment-windows_31bf3856ad364e35_6.0.6002.22497_none_c76cff7f5baea001.manifest

File version

Not applicable

File size

9,809

Date (UTC)

05-Oct-2010

Time (UTC)

10:33

Platform

Not applicable

File name

Amd64_microsoft-windows-b..ore-bootmanager-efi_31bf3856ad364e35_6.0.6002.22497_none_e5b5512c6b43dd00.manifest

File version

Not applicable

File size

5,656

Date (UTC)

05-Oct-2010

Time (UTC)

10:33

Platform

Not applicable

File name

Amd64_microsoft-windows-b..vironment-os-loader_31bf3856ad364e35_6.0.6002.22497_none_b95b22873b8ae230.manifest

File version

Not applicable

File size

7,115

Date (UTC)

05-Oct-2010

Time (UTC)

10:33

Platform

Not applicable

File name

Amd64_microsoft-windows-d..ices-boot-files-x64_31bf3856ad364e35_6.0.6002.22497_none_1a5bd83d8d28f0a4.manifest

File version

Not applicable

File size

4,242

Date (UTC)

05-Oct-2010

Time (UTC)

10:33

Platform

Not applicable

File name

Amd64_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6002.22497_none_ca64c9f583071450.manifest

File version

Not applicable

File size

17,282

Date (UTC)

05-Oct-2010

Time (UTC)

10:33

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

3,640

Date (UTC)

05-Oct-2010

Time (UTC)

10:33

Platform

Not applicable

File name

X86_microsoft-windows-d..ices-boot-files-x64_31bf3856ad364e35_6.0.6002.22497_none_be3d3cb9d4cb7f6e.manifest

File version

Not applicable

File size

12,026

Date (UTC)

05-Oct-2010

Time (UTC)

10:33

Platform

Not applicable

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