Symptoms
Consider the following scenario:
-
You have a large hard disk installed a computer that is running Windows 7.
-
You create many restore points on the computer.
-
You try to start the computer.
In this scenario, the startup process may be very slow.
Cause
This issue occurs because the boot plan for the ReadyBoot feature exceeds the size limit of 512 kilobytes (KB). Each restore point creates a snapshot of Windows that Volsnap.sys must validate during the startup process. When you create many restore points, the boot plan for the ReadyBoot feature eventually exceeds the size limit of 512 KB, and cannot be stored. Therefore, startup I/O operations are not precached, and the startup process is slow.Note The boot plan is stored in the following registry entry:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\rdyboost\Parameters\BootPlan Note: There may be additional causes that result in your PC starting up slower than expected that are unrelated to excessive System Restore Points. This issue can also happen if the boot process is loaded with a large amount of items. Example: You have a large amount of startup items, including startup applications running in the background, hardware drivers being loaded, and applications set to start when you start your PC.To check for the issue with Restore Points, look in the Event viewer for the following Event Log. Â
Log Name: Microsoft-Windows-ReadyBoost/OperationalSource: ReadyBoostEvent ID: 1016Level: InformationUser: SystemOpCode: InfoTask Category: ReadyBoot
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.
Prerequisites
To apply this hotfix, you must be running Windows 7 or Windows 7 Service Pack 1 (SP1).For more information about how to obtain a Windows 7 or Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:
976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2
Registry information
To use the hotfix in this package, you do not have to make any changes to the registry.
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 7 file information notes
-
The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:
Version
Product
Milestone
Service branch
6.1.760 0.16xxx
Windows 7
RTM
GDR
6.1.760 0.20xxx
Windows 7
RTM
LDR
6.1.760 1.17xxx
Windows 7
SP1
GDR
6.1.760 1.21xxx
Windows 7
SP1
LDR
-
GDR service branches contain only those fixes that are widely released to address widespread, extremely important issues. LDR service branches contain hotfixes in addition to widely released fixes.
-
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 7" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain 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 x86-based versions of Windows 7
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Rdyboost.sys |
6.1.7600.16819 |
173,440 |
23-May-2011 |
04:38 |
x86 |
|
Rdyboost.sys |
6.1.7600.20971 |
173,440 |
23-May-2011 |
04:40 |
x86 |
|
Rdyboost.sys |
6.1.7601.17620 |
173,440 |
23-May-2011 |
04:31 |
x86 |
|
Rdyboost.sys |
6.1.7601.21732 |
173,440 |
23-May-2011 |
06:09 |
x86 |
|
Readyboostperfcounters.h |
Not applicable |
905 |
10-Jun-2009 |
21:46 |
Not applicable |
|
Readyboostperfcounters.ini |
Not applicable |
4,284 |
10-Jun-2009 |
21:46 |
Not applicable |
|
Sysmain.dll |
6.1.7600.16819 |
1,169,408 |
23-May-2011 |
04:38 |
x86 |
|
Systemsf.ebd |
Not applicable |
152,516 |
10-Jun-2009 |
21:46 |
Not applicable |
|
Readyboostperfcounters.h |
Not applicable |
905 |
10-Jun-2009 |
21:46 |
Not applicable |
|
Readyboostperfcounters.ini |
Not applicable |
4,284 |
10-Jun-2009 |
21:46 |
Not applicable |
|
Sysmain.dll |
6.1.7600.20971 |
1,169,408 |
23-May-2011 |
04:37 |
x86 |
|
Systemsf.ebd |
Not applicable |
152,516 |
10-Jun-2009 |
21:46 |
Not applicable |
|
Readyboostperfcounters.h |
Not applicable |
905 |
10-Jun-2009 |
21:46 |
Not applicable |
|
Readyboostperfcounters.ini |
Not applicable |
4,284 |
10-Jun-2009 |
21:46 |
Not applicable |
|
Sysmain.dll |
6.1.7601.17620 |
1,159,168 |
23-May-2011 |
04:28 |
x86 |
|
Systemsf.ebd |
Not applicable |
146,852 |
05-Nov-2010 |
02:20 |
Not applicable |
|
Readyboostperfcounters.h |
Not applicable |
905 |
10-Jun-2009 |
21:46 |
Not applicable |
|
Readyboostperfcounters.ini |
Not applicable |
4,284 |
10-Jun-2009 |
21:46 |
Not applicable |
|
Sysmain.dll |
6.1.7601.21732 |
1,159,168 |
23-May-2011 |
06:09 |
x86 |
|
Systemsf.ebd |
Not applicable |
146,852 |
05-Nov-2010 |
02:20 |
Not applicable |
For all supported x64-based versions of Windows 7
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Rdyboost.sys |
6.1.7600.16819 |
213,888 |
23-May-2011 |
05:22 |
x64 |
|
Rdyboost.sys |
6.1.7600.20971 |
213,888 |
23-May-2011 |
05:23 |
x64 |
|
Rdyboost.sys |
6.1.7601.17620 |
213,888 |
23-May-2011 |
05:32 |
x64 |
|
Rdyboost.sys |
6.1.7601.21732 |
213,888 |
23-May-2011 |
05:11 |
x64 |
|
Readyboostperfcounters.h |
Not applicable |
905 |
10-Jun-2009 |
21:08 |
Not applicable |
|
Readyboostperfcounters.ini |
Not applicable |
4,284 |
10-Jun-2009 |
21:08 |
Not applicable |
|
Sysmain.dll |
6.1.7600.16819 |
1,780,736 |
23-May-2011 |
05:20 |
x64 |
|
Systemsf.ebd |
Not applicable |
369,720 |
10-Jun-2009 |
21:08 |
Not applicable |
|
Readyboostperfcounters.h |
Not applicable |
905 |
10-Jun-2009 |
21:08 |
Not applicable |
|
Readyboostperfcounters.ini |
Not applicable |
4,284 |
10-Jun-2009 |
21:08 |
Not applicable |
|
Sysmain.dll |
6.1.7600.20971 |
1,780,736 |
23-May-2011 |
05:24 |
x64 |
|
Systemsf.ebd |
Not applicable |
369,720 |
10-Jun-2009 |
21:08 |
Not applicable |
|
Readyboostperfcounters.h |
Not applicable |
905 |
10-Jun-2009 |
21:08 |
Not applicable |
|
Readyboostperfcounters.ini |
Not applicable |
4,284 |
10-Jun-2009 |
21:08 |
Not applicable |
|
Sysmain.dll |
6.1.7601.17620 |
1,743,360 |
23-May-2011 |
05:33 |
x64 |
|
Systemsf.ebd |
Not applicable |
347,904 |
05-Nov-2010 |
02:20 |
Not applicable |
|
Readyboostperfcounters.h |
Not applicable |
905 |
10-Jun-2009 |
21:08 |
Not applicable |
|
Readyboostperfcounters.ini |
Not applicable |
4,284 |
10-Jun-2009 |
21:08 |
Not applicable |
|
Sysmain.dll |
6.1.7601.21732 |
1,743,360 |
23-May-2011 |
05:08 |
x64 |
|
Systemsf.ebd |
Not applicable |
347,904 |
05-Nov-2010 |
02:20 |
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 the ReadyBoot feature, visit the following Microsoft Developer Network (MSDN) website:
A quick start guide to the ReadyBoot featureFor 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 7
Additional files for all supported x86-based versions of Windows 7
|
File name |
Update.mum |
|
File version |
Not applicable |
|
File size |
2,341 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
08:49 |
|
Platform |
Not applicable |
|
File name |
X86_04adba183e1f2ed2e2afcf36c3ec1f9d_31bf3856ad364e35_6.1.7601.17620_none_4acc7910ef53ea41.manifest |
|
File version |
Not applicable |
|
File size |
712 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
08:49 |
|
Platform |
Not applicable |
|
File name |
X86_100db5400d9ac453e1727dfa1b865762_31bf3856ad364e35_6.1.7601.21732_none_8fef5e6fbd48da82.manifest |
|
File version |
Not applicable |
|
File size |
712 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
08:49 |
|
Platform |
Not applicable |
|
File name |
X86_2883661c2c09f74569f8f6790e5cb1e9_31bf3856ad364e35_6.1.7600.20971_none_59909e9468565c02.manifest |
|
File version |
Not applicable |
|
File size |
712 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
08:49 |
|
Platform |
Not applicable |
|
File name |
X86_37a85de6cc9012c4f4613b1b473fb646_31bf3856ad364e35_6.1.7600.20971_none_9dde0511ad6422fb.manifest |
|
File version |
Not applicable |
|
File size |
704 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
08:49 |
|
Platform |
Not applicable |
|
File name |
X86_424a813aa7e8c614140d1dd6e93de378_31bf3856ad364e35_6.1.7600.16819_none_2809f9f4ac184eed.manifest |
|
File version |
Not applicable |
|
File size |
712 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
08:49 |
|
Platform |
Not applicable |
|
File name |
X86_5dca88406678e5dd03b2a3ea506ca375_31bf3856ad364e35_6.1.7601.17620_none_2d002a6e8e36c44b.manifest |
|
File version |
Not applicable |
|
File size |
704 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
08:49 |
|
Platform |
Not applicable |
|
File name |
X86_db989c543b60e46772bce473b95fea78_31bf3856ad364e35_6.1.7601.21732_none_59d1fb27745a209a.manifest |
|
File version |
Not applicable |
|
File size |
704 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
08:49 |
|
Platform |
Not applicable |
|
File name |
X86_f9994332a25bd09c500da93acaeff5bd_31bf3856ad364e35_6.1.7600.16819_none_75b3f35af7c474e0.manifest |
|
File version |
Not applicable |
|
File size |
704 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
08:49 |
|
Platform |
Not applicable |
|
File name |
X86_microsoft-windows-readyboostdriver_31bf3856ad364e35_6.1.7600.16819_none_14cb16c45614345d.manifest |
|
File version |
Not applicable |
|
File size |
22,208 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
05:00 |
|
Platform |
Not applicable |
|
File name |
X86_microsoft-windows-readyboostdriver_31bf3856ad364e35_6.1.7600.20971_none_150bd1b76f69b115.manifest |
|
File version |
Not applicable |
|
File size |
22,208 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
04:57 |
|
Platform |
Not applicable |
|
File name |
X86_microsoft-windows-readyboostdriver_31bf3856ad364e35_6.1.7601.17620_none_169da144534ad82b.manifest |
|
File version |
Not applicable |
|
File size |
22,208 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
04:48 |
|
Platform |
Not applicable |
|
File name |
X86_microsoft-windows-readyboostdriver_31bf3856ad364e35_6.1.7601.21732_none_171e6eb76c6ec694.manifest |
|
File version |
Not applicable |
|
File size |
22,208 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
06:30 |
|
Platform |
Not applicable |
|
File name |
X86_microsoft-windows-s..mmaintenanceservice_31bf3856ad364e35_6.1.7600.16819_none_3d740288414e7bd0.manifest |
|
File version |
Not applicable |
|
File size |
47,856 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
05:07 |
|
Platform |
Not applicable |
|
File name |
X86_microsoft-windows-s..mmaintenanceservice_31bf3856ad364e35_6.1.7600.20971_none_3db4bd7b5aa3f888.manifest |
|
File version |
Not applicable |
|
File size |
47,856 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
05:04 |
|
Platform |
Not applicable |
|
File name |
X86_microsoft-windows-s..mmaintenanceservice_31bf3856ad364e35_6.1.7601.17620_none_3f468d083e851f9e.manifest |
|
File version |
Not applicable |
|
File size |
47,856 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
04:52 |
|
Platform |
Not applicable |
|
File name |
X86_microsoft-windows-s..mmaintenanceservice_31bf3856ad364e35_6.1.7601.21732_none_3fc75a7b57a90e07.manifest |
|
File version |
Not applicable |
|
File size |
47,856 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
06:34 |
|
Platform |
Not applicable |
Additional files for all supported x64-based versions of Windows 7
|
File name |
Amd64_09fe0291e0572a9311e2deb4b662e018_31bf3856ad364e35_6.1.7601.17620_none_1d6b433de0292b4e.manifest |
|
File version |
Not applicable |
|
File size |
716 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
08:49 |
|
Platform |
Not applicable |
|
File name |
Amd64_356357cfb1e3c1d2c1ddafa43de71281_31bf3856ad364e35_6.1.7600.20971_none_e9a84466ecac1cb0.manifest |
|
File version |
Not applicable |
|
File size |
708 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
08:49 |
|
Platform |
Not applicable |
|
File name |
Amd64_52405ed64043931ad984e9862a8e4a96_31bf3856ad364e35_6.1.7600.16819_none_233ff0ea1b0c7bc1.manifest |
|
File version |
Not applicable |
|
File size |
708 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
08:49 |
|
Platform |
Not applicable |
|
File name |
Amd64_6af0d937900b5336b6dbc62f8e277168_31bf3856ad364e35_6.1.7600.20971_none_8e7fca367c54b86d.manifest |
|
File version |
Not applicable |
|
File size |
716 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
08:49 |
|
Platform |
Not applicable |
|
File name |
Amd64_7a4016db05bc2b0520f36f2d94013944_31bf3856ad364e35_6.1.7600.16819_none_6415869f0c508ca7.manifest |
|
File version |
Not applicable |
|
File size |
716 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
08:49 |
|
Platform |
Not applicable |
|
File name |
Amd64_9b1c9891e78a325f7ed78ccaf3fcd770_31bf3856ad364e35_6.1.7601.17620_none_2ea8a3e7054587a3.manifest |
|
File version |
Not applicable |
|
File size |
708 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
08:49 |
|
Platform |
Not applicable |
|
File name |
Amd64_9ce5a95c7b19b09e20e727d8de08146a_31bf3856ad364e35_6.1.7601.21732_none_47130b5d0a2ef57a.manifest |
|
File version |
Not applicable |
|
File size |
708 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
08:49 |
|
Platform |
Not applicable |
|
File name |
Amd64_fba1b80171f061e06f8908edaf8dd786_31bf3856ad364e35_6.1.7601.21732_none_711862c558bc7fbc.manifest |
|
File version |
Not applicable |
|
File size |
716 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
08:49 |
|
Platform |
Not applicable |
|
File name |
Amd64_microsoft-windows-readyboostdriver_31bf3856ad364e35_6.1.7600.16819_none_70e9b2480e71a593.manifest |
|
File version |
Not applicable |
|
File size |
22,212 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
05:55 |
|
Platform |
Not applicable |
|
File name |
Amd64_microsoft-windows-readyboostdriver_31bf3856ad364e35_6.1.7600.20971_none_712a6d3b27c7224b.manifest |
|
File version |
Not applicable |
|
File size |
22,212 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
05:50 |
|
Platform |
Not applicable |
|
File name |
Amd64_microsoft-windows-readyboostdriver_31bf3856ad364e35_6.1.7601.17620_none_72bc3cc80ba84961.manifest |
|
File version |
Not applicable |
|
File size |
22,212 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
05:54 |
|
Platform |
Not applicable |
|
File name |
Amd64_microsoft-windows-readyboostdriver_31bf3856ad364e35_6.1.7601.21732_none_733d0a3b24cc37ca.manifest |
|
File version |
Not applicable |
|
File size |
22,212 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
07:12 |
|
Platform |
Not applicable |
|
File name |
Amd64_microsoft-windows-s..mmaintenanceservice_31bf3856ad364e35_6.1.7600.16819_none_99929e0bf9abed06.manifest |
|
File version |
Not applicable |
|
File size |
47,860 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
06:03 |
|
Platform |
Not applicable |
|
File name |
Amd64_microsoft-windows-s..mmaintenanceservice_31bf3856ad364e35_6.1.7600.20971_none_99d358ff130169be.manifest |
|
File version |
Not applicable |
|
File size |
47,860 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
05:55 |
|
Platform |
Not applicable |
|
File name |
Amd64_microsoft-windows-s..mmaintenanceservice_31bf3856ad364e35_6.1.7601.17620_none_9b65288bf6e290d4.manifest |
|
File version |
Not applicable |
|
File size |
47,860 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
05:57 |
|
Platform |
Not applicable |
|
File name |
Amd64_microsoft-windows-s..mmaintenanceservice_31bf3856ad364e35_6.1.7601.21732_none_9be5f5ff10067f3d.manifest |
|
File version |
Not applicable |
|
File size |
47,860 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
07:15 |
|
Platform |
Not applicable |
|
File name |
Update.mum |
|
File version |
Not applicable |
|
File size |
2,357 |
|
Date (UTC) |
23-May-2011 |
|
Time (UTC) |
08:49 |
|
Platform |
Not applicable |
