Microsoft KB Archive/308640

= STOP: 0x0000007b Is Generated When You Boot to a Mirrored Dynamic Disk =

PSS ID Number: 308640

Article Last Modified on 9/19/2003

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The information in this article applies to:


 * Microsoft Windows 2000 Server SP1
 * Microsoft Windows 2000 Server SP2
 * Microsoft Windows 2000 Advanced Server SP1
 * Microsoft Windows 2000 Advanced Server SP2
 * Microsoft Small Business Server 2000

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This article was previously published under Q308640



SYMPTOMS
If you are using software mirroring on Dynamic Disks for your boot partition, the computer may generate the following error message during a normal shutdown and restart process:

STOP: 0x0000007b (0x817bdee8, 0xc0000010, 0x00000000, 0x00000000) Inaccessible_Boot_Device

The second parameter is defined as:

0xc0000010 STATUS_INVALID_DEVICE_REQUEST



CAUSE
This behavior occurs because the primary boot disk at one time reported some unrecoverable disk input/output (I/O) errors, and has failed redundancy. This causes the primary boot volume to be flagged with a &quot;recover&quot; status in the Logical Disk Manager (LDM) database, which prevents booting to the stale volume.



WORKAROUND
To work around this behavior, use a fault tolerance (FT) boot floppy to boot into the operating system that is located on the shadow drive. For additional information about how to create a boot floppy, click the article number below to view the article in the Microsoft Knowledge Base:

119467 How to Create a Bootable Disk for an NTFS or FAT Partition

After you reboot into the operating system on the shadow drive, start Disk Management, right-click the primary drive (it should have a yellow triangle, which shows that it needs attention), and then click reactivate disk to remove the recover flag and start regeneration. After the mirror is regenerated and healthy, you can boot normally to the primary drive. However, it is important to investigate why the primary drive had I/O errors and to correct the problem to prevent the reoccurrence of this behavior. The system event log should contain some event messages that were reported by Dmio prior to the boot problem.

NOTE: If the unrecoverable disk I/O errors that caused this problem only occurred early in the boot process, the system event log may not contain any messages about the failed redundancy until after you successfully boot to the shadow drive.



STATUS
This behavior is by design.



MORE INFORMATION
When you use Dynamic Disk Mirroring for the operating system disk prior to rebooting the server, look in Disk Management to make sure that the Mirrored Volume and Dynamic Disks are in a healthy state and do not show errors. If they do, take action to correct the error by reactivating the disk to reset the LDM flags. If this action does not succeed, boot to the shadow drive by using a fault tolerance (FT) boot floppy disk for the next scheduled reboot.

Additional query words: Stop 0x7b 7b

Keywords: kbenv kberrmsg kbprb KB308640

Technology: kbSBServ2000 kbSBServSearch kbwin2000AdvServ kbwin2000AdvServSearch kbWin2000AdvServSP1 kbWin2000AdvServSP2 kbwin2000Search kbwin2000Serv kbwin2000ServSearch kbwin2000ServSP1 kbwin2000ServSP2 kbWinAdvServSearch kbZNotKeyword3

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