"c0000225" or "c0000017" error occurs when you try to start a Windows PE RAM disk image on a UEFI-enabled computer that is running Windows 7 or Windows Server 2008 R2
You have a computer that is running Windows 7 or Windows Server 2008 R2.
You enable the Unified Extensible Firmware Interface (UEFI) mode on this computer.
You try to start the computer from a Windows Preinstallation Environment (Windows PE)-based RAM disk image. For example, you select the Repair your computer option to restore the computer at startup after you press F8, or, you attempt to boot Windows PE from a USB Flash Drive.
In this scenario, the boot loader cannot load the operating system. Additionally, you receive one of the following error messages:
The boot selection failed because a required device is inaccessible (c0000225).
This issue occurs because the status of the allocated memory is out of synchronization between the memory manager that is used by the UEFI and the memory manager that is used by the boot loader.
Some memory that is used by one of the memory managers is still marked as available by the other memory manager. Therefore, the issue that is described in the "Symptoms" section occurs.
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 Windows 7 or 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 may 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 English (United States) 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 and Windows Server 2008 R2 file information notes
Important Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" 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 R2 and 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 x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File name
File version
File size
Date
Time
Platform
Setbcdlocale.dll
6.1.7600.20738
62,976
19-Jun-2010
06:53
x64
Winload.efi
6.1.7600.20738
642,440
19-Jun-2010
07:05
Not applicable
Winload.exe
6.1.7600.20738
604,488
19-Jun-2010
06:58
x64
Winresume.efi
6.1.7600.20738
561,024
19-Jun-2010
07:05
Not applicable
Winresume.exe
6.1.7600.20738
518,672
19-Jun-2010
06:58
x64
Bootmgfw.efi
6.1.7600.20738
672,128
19-Jun-2010
07:05
Not applicable
Bootmgr.efi
6.1.7600.20738
669,064
19-Jun-2010
07:05
Not applicable
Winload.efi
6.1.7600.20738
642,440
19-Jun-2010
07:05
Not applicable
Winload.exe
6.1.7600.20738
604,488
19-Jun-2010
06:58
x64
Winresume.efi
6.1.7600.20738
561,024
19-Jun-2010
07:05
Not applicable
Winresume.exe
6.1.7600.20738
518,672
19-Jun-2010
06:58
x64
Bootmgfw.efi
6.1.7600.20738
672,128
19-Jun-2010
07:05
Not applicable
Wdsmgfw.efi
6.1.7600.20738
531,968
19-Jun-2010
04:11
Not applicable
Setbcdlocale.dll
6.1.7600.20738
62,976
19-Jun-2010
06:53
x64
Winload.efi
6.1.7600.20738
642,440
19-Jun-2010
07:05
Not applicable
Winload.exe
6.1.7600.20738
604,488
19-Jun-2010
06:58
x64
Winresume.efi
6.1.7600.20738
557,448
19-Jun-2010
07:05
Not applicable
Winresume.exe
6.1.7600.20738
507,392
19-Jun-2010
04:00
x64
Winload.efi
6.1.7600.20738
642,440
19-Jun-2010
07:05
Not applicable
Winload.exe
6.1.7600.20738
604,488
19-Jun-2010
06:58
x64
Winresume.efi
6.1.7600.20738
557,448
19-Jun-2010
07:05
Not applicable
Winresume.exe
6.1.7600.20738
507,392
19-Jun-2010
04:00
x64
Abortpxe.com
Not applicable
79
22-Jul-2009
23:37
Not applicable
Bootmgr.exe
6.1.7600.20738
523,136
19-Jun-2010
06:36
x86
Hdlscom1.com
Not applicable
26,076
22-Jul-2009
22:59
Not applicable
Hdlscom1.n12
Not applicable
26,060
22-Jul-2009
22:59
Not applicable
Hdlscom2.com
Not applicable
26,076
22-Jul-2009
22:59
Not applicable
Hdlscom2.n12
Not applicable
26,060
22-Jul-2009
22:59
Not applicable
Pxeboot.com
Not applicable
25,772
22-Jul-2009
22:59
Not applicable
Pxeboot.n12
Not applicable
25,772
22-Jul-2009
22:59
Not applicable
Wdsnbp.com
Not applicable
31,124
22-Jul-2009
23:37
Not applicable
For all supported IA-64-based versions of Windows Server 2008 R2