Thank you all for your great tips. I’ll try to experiment with them later.
Before I saw your posts, I went ahead and reformatted my C partition which went very slow. My system will not install Windows 2000 pro from the CD in Dos Mode. So I needed to go into the I386 directory and activate WINNT.exe which then transfers files from the CD over to the C drive. That transference of files took about 1 hour.
If I keep a copy of Win2000 on my hard drive and do this from another partition through Dos, it either takes just as long to transfer the files or even longer. It is only after the files have been transferred to the C: drive that I can restart the computer and begin the Win2000 pro installation.
That all seems like a clumsy and slow way to install. I thought that other than just the advantage of having a backup, CloneCD would somehow let me quickly transfer the Win2000 files to the C drive so I could immediately begin installation but I’m not completely sure if it will extract itself in the Dos mode.