Can’t log on after adding a hard drive or breaking a mirror
Your system boots, you specify a valid username and password, and you receive messages indicating a logon in process. But then Windows 2000 displays the logon dialog again rather than displaying the desktop. This behavior can occur if the Windows 2000 boot partition drive letter does not match the drive letter assigned during Windows 2000 Setup. This situation can arise in the following circumstances:
You install a new drive, which implicitly changes drive order.
You change drive order in the BIOS.
You break a system/boot mirror and try to boot from the old former shadow drive with the old primary drive missing or unavailable.
Windows 2000 records drive letters in the registry and reassigns drive letters on the basis of a Globally Unique Identifier (GUID) that it records for each volume. If the GUID changes, it’s possible the original drive letter might not be reassigned to the boot volume. The solution to the problem depends on the cause.
Restoring the original drive configuration
If you added a new drive to the system or changed the order of drives through the BIOS, the immediate solution is to restore the original configuration by undoing what you did. For example, remove the new drive or change its configuration (as in restoring the original SCSI IDs), or restore the original BIOS order. Try these tasks as appropriate to fix the problem:
If you’ve added any cloned hard disks to the system, remove them and restart, then ...
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