Might be easier to remove the extra disk till after the install.
To do a clean install, either boot the Windows 2000 install CD-Rom or
setup disks. The set of four install disks can be created from your
Windows 2000 CD-Rom; change to the \bootdisk directory on the CD-Rom
and execute makeboot.exe (from dos) or makebt32.exe (from 32 bit) and
follow the prompts.
(Note: If your drive controller is not natively supported then you'll
want to boot the Windows 2000 install CD-Rom. Then *F6* very early and
very important (at setup is inspecting your system) in the setup to
prevent drive controller detection, and select S to specify additional
drivers. Then later you'll be prompted to insert the manufacturer
supplied Windows 2000 driver for your drive controller in drive "A")
Setup inspects your computer's hardware configuration and then begins
to install the Setup and driver files. When the Windows 2000
Professional screen appears, press ENTER to set up Windows 2000
Professional.
Read the license agreement, and then press the F8 key to accept the
terms of the license agreement and continue the installation.
When the Windows 2000 Professional Setup screen appears, all the
existing partitions and the unpartitioned spaces are listed for each
physical hard disk. Use the ARROW keys to select the partitions Press
D to delete an existing partition, If you press D to delete an
existing partition, you must then press L (or press ENTER, and then
press L if it is the System partition) to confirm that you want to
delete the partition. Repeat this step for each of the existing
partitions When all the partitions are deleted press F3 to exit setup,
(to avoid unexpected drive letter assignments with your new install)
then restart the pc then when you get to this point in setup again
select the unpartitioned space, and then press C to create a new
partition and specify the size (if required). Windows will by default
use all available space.
Be sure to apply SP4 and these two below to your new install before
connecting to any network. Internet included. (sasser, msblast)
http://download.microsoft.com/download/E/6/A/E6A04295-D2A8-40D0- A0C5-24
1BFECD095E/W2KSP4_EN.EXE
http://www.microsoft.com/technet/security/bulletin/MS03-043.mspx
http://www.microsoft.com/technet/security/bulletin/MS03-049.mspx
Then
Rollup 1 for Microsoft Windows 2000 Service Pack 4
http://www.microsoft.com/downloads/details.aspx? amp;displaylang=en&fami
lyid=B54730CF-8850-4531-B52B-BF28B324C662&displaylang=en and
http://www.microsoft.com/technet/security/bulletin/MS08-067.mspx