If you have access to a DVD burner and a DVD RW disc, give it a try.
Of course, you'll need about 4.7gb of HDD space to do it.
You'll have to copy (aka 'RIP') the entire discs contents to the HDD, then burn it back onto a RW disc. I recommend the RW because of the price of regular DVD R blanks.
If the copy works, then burn it onto a regular DVD R disc.
If the disc has copy protection, you'll need special riping software.
www.doom9.org should be able to help you further.
For legal reasons, I won't explain further.