Microsoft KB Archive/824207

= You Receive a &quot;STOP: 0x0000007b Inaccessible_Boot_Device&quot; Error Message When You Try to Start a Windows 2000-Based Computer =

PSS ID Number: 824207

Article Last Modified on 8/21/2003

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The information in this article applies to:


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Datacenter Server
 * Microsoft Windows 2000 Professional

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Important This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows Registry



SYMPTOMS
When you try to start a computer that is running Windows 2000, you receive the following Stop error:

STOP: 0x0000007b (0xf881b84c,0xc0000034,0x00000000,0x00000000)

Inaccessible_Boot_Device

0xc00000034 STATUS_OBJECT_NAME_NOT_FOUND



CAUSE
This Stop error may occur if the primary disk group identity of the hard disk does not match the primary disk group identity that is stored in the registry. This mismatch may occur if you do all the following:
 * 1) On a computer that is running Windows 2000, you configure the hard disk that contains the system partition as a dynamic disk.
 * 2) You remove the hard disk from the computer, and you then install the hard disk in a second Windows 2000-based computer.
 * 3) On the second computer, you import the hard disk to a disk group that contains dynamic disks.
 * 4) You return the hard disk from the second computer to the first computer.



RESOLUTION
To resolve this problem, use Registry Editor to delete the  registry key from the registry of the computer that does not start. To delete this key, follow these steps:

WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
 * 1) Remove the hard disk that contains the system partition from the computer that does not start, install the hard disk in the second computer, and then start the second computer.
 * 2) On the second computer, click Start, click Run, type regedt32 in the Open box, and then click OK.
 * 3) In Registry Editor, click HKEY_LOCAL_MACHINE, and then click Load Hive on the Registry menu.
 * 4) Locate and then click the System file that contains the hive of the first computer's operating system.

Note The System file is in the :\Winnt\System32\Config folder, where   is the drive letter of the hard disk that is from the first computer.
 * 1) Click Open, type Temp in the Key Name box, and then click OK.
 * 2) Double-click HKEY_LOCAL_MACHINE, and then double-click Temp.
 * 3) Double-click ControlSet00 , where   is the number of the control set.
 * 4) Double-click Services, double-click dmio, and then click Boot Info.
 * 5) Right-click the Primary Disk Group registry key, and then click Delete.
 * 6) Repeat steps 7 through 9 for each instance of ControlSet00  that appears in.
 * 7) Click Temp, click Unload Hive on the Registry menu, and then click Yes.
 * 8) Quit Registry Editor.
 * 9) Shut down the second computer, and then remove the hard disk that is from the first computer.
 * 10) Reinstall the hard disk in the first computer, and start the first computer.



MORE INFORMATION
In Windows 2000, there can be only one dynamic disk group. When you move a dynamic disk from one computer to a second computer that already contains dynamic disks, the primary disk group identity on the disk is changed, and the disk is merged into the second computer's dynamic disk database. However, the primary disk group identity that is stored in the registry of the operating system on the disk is not changed. When you return the hard disk to the first computer, the mismatch between the new primary disk group identity and the primary disk group identity that is stored in the registry causes the error.

For additional information about dynamic disk numbering, click the following article number to view the article in the Microsoft Knowledge Base:

222470 Dynamic Disk Numbering and the DmDiag.exe Tool

For additional information about disk groups in Windows 2000, click the following article number to view the article in the Microsoft Knowledge Base:

222189 Description of Disk Groups in Windows Disk Management

Keywords: kbfix kbprb KB824207

Technology: kbwin2000AdvServ kbwin2000AdvServSearch kbwin2000DataServ kbwin2000DataServSearch kbwin2000Pro kbwin2000ProSearch kbwin2000Search kbwin2000Serv kbwin2000ServSearch kbWinAdvServSearch kbWinDataServSearch

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