@Tony
I just can not understand what you are trying to do my friend, could you possably put it into plain english?
If you are trying to create a Mirror set then read this
mirror set
A fault-tolerant partition created with Windows NT 4.0 or earlier that duplicates data on two physical disks. You can only repair, resynchronize, break, or delete mirror sets in Windows 2000. To create new volumes that are mirrored, use mirrored volumes on dynamic disks.
OK then you can not do this in W2k
What you need to do is create a dynamic disk
dynamic disk
A physical disk that can be accessed only by Windows 2000 and Windows XP. Dynamic disks provide features that basic disks do not, such as support for volumes that span multiple disks. Dynamic disks use a hidden database to track information about dynamic volumes on the disk and other dynamic disks in the computer. You convert basic disks to dynamic by using the Disk Management snap-in or the DiskPart command line utility. When you convert a basic disk to dynamic, all existing basic volumes become dynamic volumes.
NOTE
"all existing basic volumes become dynamic volumes"
OK, now you need To add a mirror to an existing simple volume (You can mirror volumes only on computers running Windows 2000 Server, Windows 2000 Advanced Server, or Windows 2000 Datacenter Server.)
I take it you are runing one of the above?
To open Computer Management, click Start, point to Settings, and then click Control Panel. Double-click Administrative Tools, and then double-click Computer Management.
You must be logged on as an administrator or a member of the Administrators group in order to complete this procedure. If your computer is connected to a network, network policy settings may also prevent you from completing this procedure.
Any existing simple volume can be mirrored onto another dynamic disk, as long as there is sufficient unallocated space on that disk. If you do not have a dynamic disk with enough unallocated space, the Add Mirror menu item is unavailable. (To verify you have enough space, right-click the disk, click Properties, and then check the size in Unallocated Space. This size may be slightly smaller than shown in the graphical and list views.)
Mirrored volumes are fault tolerant and use RAID-1, which provides redundancy by creating two identical copies of a volume.
You cannot extend a simple volume after it has been mirrored.
Both copies (mirrors) of the mirrored volume share the same drive letter. If you just want to provide a backup drive then create a Norton Ghost image of your drive 0 and then you can burn it to your drive 1 and create a perfect copy compleate with O/S and programs.
Brian