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Using the Recovery Console

If the system cannot start due to a corrupted MBR or boot sector, you can recreate either of these disk structures by using the Recovery Console.

To start the Recovery Console, start the computer from the Windows 2000 Setup CD or the Windows 2000 Setup floppy disks. If you do not have Windows 2000 Setup floppy disks and your computer cannot start from the CD, use another Windows 2000–based computer to create the setup disks. For information about creating the Windows 2000 Setup floppy disks, see Windows 2000 Server Help.

Start the computer and enter Windows 2000 Setup. Press ENTER at the Setup Notification screen to go to the Welcome to Setup screen. Press R to repair a Windows 2000 installation, and then press C to use the Recovery Console.

The Recovery Console displays all valid installations of Windows 2000 on the computer. To access the hard disk, press the number key representing the Windows 2000 installation you want to repair (typically represented as 1: C:\WINNT), and then press ENTER.


Note

If you press ENTER without typing a number, the Recovery Console quits and restarts the computer.

The Recovery Console may also show valid installations of Windows NT. However, as the Recovery Console was not specifically designed to work with Windows NT, the results of attempting to access a Windows NT installation can be unpredictable.

The Recovery Console then prompts you for the Administrator password.


Note

To access the hard disks with Recovery Console, you must know the password for the local Administrator account. If you do not have the correct password, or if the security database for the installation of Windows 2000 you are attempting to access is corrupted, Recovery Console does not allow access to the local disks.

To replace the MBR, at the Recovery Console command prompt, type:

fixmbr

Verify if you want to proceed because depending upon the location and the cause of the corruption within the damaged MBR, this operation can cause the data on the hard disk to become inaccessible. Press Y to proceed, or N to cancel.


Important

Running Fixmbr overwrites only the master boot code, leaving the existing partition table intact. If the corruption in the MBR affects the partition table, running Fixmbr may not resolve the problem.

To have the Recovery Console replace the boot sector, at the Recovery Console command prompt, type:

fixboot

If you do not specify a particular drive, the Recovery Console replaces the boot sector of the boot partition. If another volume's boot sector is corrupted, enter the Fixboot command, followed by a space, and then specify the drive letter with a colon immediately afterward.

You can also use DiskProbe to edit these disk structures. Because DiskProbe only runs under Windows 2000 and Windows NT, you can only use it to fix errors on a boot sector, a non-startup partition, or an MBR on a non-startup disk. For more information about using DiskProbe to edit boot sectors and MBRs, install the Support Tools from the Windows 2000 Setup CD and see the document Dskprtrb.doc.