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Symptoms

Consider the following scenario:

  • You connect a Secure Digital (SD) card that is larger than 32 GB to a computer that is running Windows Vista or Windows Server 2008.

  • You try to format the SD card, or try to check its properties.

In this scenario, the capacity of the SD card is reported incorrectly.

Note This issue also occurs on a computer that is running Windows 7 or Windows Server 2008 R2.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:

976422 The capacity of a Secure Digital (SD) card that is larger than 32 GB is reported incorrectly in Windows 7 and in Windows Server 2008 R2

Cause

This issue occurs because the capacity of SD cards that are larger than 32 GB is calculated incorrectly in Windows Vista and in Windows Server 2008.

Information about the capacity of SD cards is provided by the Card Specific Data (CSD) register. If the capacity of an SD card is equal to or lower than 32 GB, the "C_SIZE" (device size reserved) field in the CSD register is 12 bits long (with 10 bits high, and 2 bits low). If the capacity of an SD card is greater than 32 GB, the "C_SIZE" field in the CSD register is 22 bits long (with 6 bits high, and 16 bits low).

In Windows Vista and in Windows Server 2008, the capacity of SD cards that are equal to or lower than 32 GB is calculated correctly. However, for SD cards that are larger than 32 GB, the high bits are shifted incorrectly by 6 bits instead of 16 bits. Therefore, the capacity is calculated incorrectly.

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:

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.

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 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 install the 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 install the 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


Registry information

To use the hotfix in this package, you do not have to make any changes to the registry.

Restart requirement

You 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 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 and Windows Server 2008 file information notes

  • The files that apply to a specific product or milestone (RTM, SPn) can be identified by examining the file version numbers as shown in the following table:

    Version

    Product

    Milestone

    Service branch

    6.0.6000.20xxx

    Windows Vista

    RTM

    LDR

    6.0.6001.22xxx

    Windows Vista SP1 and Windows Server 2008 SP1

    SP1

    LDR

    6.0.6002.22xxx

    Windows Vista SP2 and Windows Server 2008 SP2

    SP2

    LDR

  • Service Pack 1 is integrated into the original 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
    . MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. The security catalog files (attributes not listed) are signed with a Microsoft digital signature.

For all supported x86-based versions of Windows Server 2008 and of Windows Vista Service Pack 1

File name

File version

File size

Date

Time

SP requirement

Sdbus.sys

6.0.6001.22527

89,088

18-Sep- 2009

20:25

SP1

Sffdisk.sys

6.0.6001.22527

13,312

18-Sep- 2009

20:47

SP1

Sffp_mmc.sys

6.0.6001.22527

12,288

18-Sep- 2009

20:47

SP1

Sffp_sd.sys

6.0.6001.22527

11,776

18-Sep- 2009

20:47

SP1

For all supported x86-based versions of Windows Server 2008 Service Pack 2 and of Windows Vista Service Pack 2

File name

File version

File size

Date

Time

SP requirement

Sdbus.sys

6.0.6002.22229

89,088

18-Sep- 2009

09:54

SP2

Sffdisk.sys

6.0.6002.22229

13,312

18-Sep- 2009

10:13

SP2

Sffp_mmc.sys

6.0.6002.22229

12,288

18-Sep- 2009

10:14

SP2

Sffp_sd.sys

6.0.6002.22229

11,776

18-Sep- 2009

10:14

SP2

For all supported x64-based versions of Windows Server 2008 and of Windows Vista Service Pack 1

File name

File version

File size

Date

Time

SP requirement

Sdbus.sys

6.0.6001.22527

111,104

18-Sep- 2009

21:26

SP1

Sffdisk.sys

6.0.6001.22527

14,848

18-Sep- 2009

21:53

SP1

Sffp_mmc.sys

6.0.6001.22527

14,336

18-Sep- 2009

21:53

SP1

Sffp_sd.sys

6.0.6001.22527

13,824

18-Sep- 2009

21:53

SP1

For all supported x64-based versions of Windows Server 2008 Service Pack 2 and of Windows Vista Service Pack 2

File name

File version

File size

Date

Time

SP requirement

Sdbus.sys

6.0.6002.22229

111,104

18-Sep- 2009

09:58

SP2

Sffdisk.sys

6.0.6002.22229

14,848

18-Sep- 2009

10:24

SP2

Sffp_mmc.sys

6.0.6002.22229

14,336

18-Sep- 2009

10:24

SP2

Sffp_sd.sys

6.0.6002.22229

13,824

18-Sep- 2009

10:24

SP2

For all supported Itanium-based versions of Windows Server 2008


File name

File version

File size

Date

Time

SP requirement

Sdbus.sys

6.0.6001.22527

268,800

18-Sep- 2009

20:22

SP1

Sffdisk.sys

6.0.6001.22527

33,792

18-Sep- 2009

20:57

SP1

Sffp_mmc.sys

6.0.6001.22527

30,208

18-Sep- 2009

20:57

SP1

Sffp_sd.sys

6.0.6001.22527

30,720

18-Sep- 2009

20:57

SP1

For all supported Itanium-based versions of Windows Server 2008 Service Pack 2

File name

File version

File size

Date

Time

SP requirement

Sdbus.sys

6.0.6002.22229

268,800

18-Sep- 2009

09:51

SP2

Sffdisk.sys

6.0.6002.22229

33,792

18-Sep- 2009

10:21

SP2

Sffp_mmc.sys

6.0.6002.22229

30,208

18-Sep- 2009

10:21

SP2

Sffp_sd.sys

6.0.6002.22229

30,720

18-Sep- 2009

10:21

SP2

Status

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


More Information

Additional file information for Windows Server 2008 and for Windows Vista

Additional files for all supported x86-based versions of Windows Server 2008 and of Windows Vista

File name

File version

File size

Date

Time

SP requirement

Service branch

Package_for_kb975823_client_1~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,367

19-Sep- 2009

06:37

None

Not Applicable

Package_for_kb975823_client_2~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,530

19-Sep-2009

06:37

None

Not Applicable

Package_for_kb975823_client~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,713

19-Sep- 2009

06:37

None

Not Applicable

Package_for_kb975823_server_0~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,425

19-Sep-2009

06:37

None

Not Applicable

Package_for_kb975823_server_1~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,531

19-Sep- 2009

06:37

None

Not Applicable

Package_for_kb975823_server~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,713

19-Sep-2009

06:37

None

Not Applicable

X86_sdbus.inf_31bf3856ad364e35_6.0.6001.22527_none_725dc354e37e8f83.manifest

Not Applicable

1,664

19-Sep- 2009

06:43

None

Not Applicable

X86_sdbus.inf_31bf3856ad364e35_6.0.6002.22229_none_744635d0e0a31755.manifest

Not Applicable

1,664

19-Sep- 2009

06:43

None

Not Applicable

X86_sffdisk.inf_31bf3856ad364e35_6.0.6001.22527_none_a4b68f9403117172.manifest

Not Applicable

2,836

19-Sep -2009

06:43

None

Not Applicable

X86_sffdisk.inf_31bf3856ad364e35_6.0.6002.22229_none_a69f02100035f944.manifest

Not Applicable

2,836

19-Sep -2009

06:43

None

Not Applicable

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

File name

File version

File size

Date

Time

SP requirement

Service branch

Amd64_sdbus.inf_31bf3856ad364e35_6.0.6001.22527_none_ce7c5ed89bdc00b9.manifest

Not Applicable

1,666

19-Sep- 2009

06:47

None

Not Applicable

Amd64_sdbus.inf_31bf3856ad364e35_6.0.6002.22229_none_d064d1549900888b.manifest

Not Applicable

1,666

19-Sep -2009

06:47

None

Not Applicable

Amd64_sffdisk.inf_31bf3856ad364e35_6.0.6001.22527_none_00d52b17bb6ee2a8.manifest

Not Applicable

2,838

19- Sep-2009

06:47

None

Not Applicable

Amd64_sffdisk.inf_31bf3856ad364e35_6.0.6002.22229_none_02bd9d93b8936a7a.manifest

Not Applicable

2,838

19- Sep-2009

06:47

None

Not Applicable

Package_for_kb975823_client_1~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,375

19-Sep-2009

06:37

None

Not Applicable

Package_for_kb975823_client_2~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,540

19-Sep- 2009

06:37

None

Not Applicable

Package_for_kb975823_client~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,723

19-Sep-2009

06:37

None

Not Applicable

Package_for_kb975823_server_0~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,433

19-Sep- 2009

06:37

None

Not Applicable

Package_for_kb975823_server_1~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,541

19-Sep-2009

06:37

None

Not Applicable

Package_for_kb975823_server~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,723

19-Sep- 2009

06:37

None

Not Applicable

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

File name

File version

File size

Date

Time

SP requirement

Service branch

Ia64_sdbus.inf_31bf3856ad364e35_6.0.6001.22527_none_725f674ae37c987f.manifest

Not Applicable

1,665

19-Sep- 2009

06:37

None

Not Applicable

Ia64_sdbus.inf_31bf3856ad364e35_6.0.6002.22229_none_7447d9c6e0a12051.manifest

Not Applicable

1,665

19-Sep- 2009

06:37

None

Not Applicable

Ia64_sffdisk.inf_31bf3856ad364e35_6.0.6001.22527_none_a4b8338a030f7a6e.manifest

Not Applicable

2,837

19- Sep-2009

06:37

None

Not Applicable

Ia64_sffdisk.inf_31bf3856ad364e35_6.0.6002.22229_none_a6a0a60600340240.manifest

Not Applicable

2,837

19- Sep-2009

06:37

None

Not Applicable

Package_for_kb975823_server_0~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not Applicable

1,429

19-Sep-2009

06:37

None

Not Applicable

Package_for_kb975823_server_1~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not Applicable

1,370

19-Sep- 2009

06:37

None

Not Applicable

Package_for_kb975823_server~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not Applicable

1,716

19-Sep-2009

06:37

None

Not Applicable

References

Microsoft provides third-party contact information to help you find technical support. This contact information may change without notice. Microsoft does not guarantee the accuracy of this third-party contact information.

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