Can’t make Win 2000 Professinal Bootable CD from existing CD

Hi there,
I am struggling to burn Windows 2000 Professional CD from my old win 2000 pro cd. My old windows 2000 Professional cd in not bootable and I was wondering if I can make another copy of it with bootable feature. I have Sonic Recordnow software on my computer. I can see there is a button for making bootable cd but I don’t know how to make one. If anyone can help me woth this issue I will really appreciate your feedback.

Thanks is advance!