Make copy of Snow Leopard DVD

Ok, so this question might be a little out of scope for these forums, but its worth a shot.  I ordered my Snow Leopard update the other day, popped it in my macbook and tried to update.  I got through the first couple of steps, then it said installing... (or something similar).  The DVD drive mad a few weird sounds for about 10 minutes, all while the install status meter never moved. After the 10 minutes or so, I forget the exact message but it said something along the lines of it cannot read from the disc.  Eject, clean it and try again.  Which I did, but got the same message.  I looked at the disc, and it did not have a flawless shiny surface, but nor was it scratched to **** either.  I have seen discs in much worse shape that have worked perfectly. 
I figured if I cant get the physical disc to work on my mac, i should try to make a copy or image of the disc that I can use.  I tried using my Mac to make an image and copy of it, but i get a similar error stating it cannot read from the source disc.  I also have a PC so I figured if I pop it in there to make a copy or image, maybe that optical drive can read the disc better. 
So on to my question...  My PC "seems" to read the disc just fine but being a Windows platform, it only "sees" Boot Camp installation files.  Also, it says the size of the disc is only 780MB whereas on the Mac the size was 6+GB.  I can make a copy of the disc, but it only copies those 750MB worth of Boot Camp files, so when I put the copied disc in my Mac, it "sees" only the windows files and not the Snow Leopard files.  So, is there a way on my PC to make a bit by bit exact copy of the Snow Leopard disc?  Or can it be that the Snow Leopard part of the disc is really scratched that bad and my PC can not even read it either? 

The PC cannot read the HFS file system, so it only "sees" the
boot camp (joliet) file system (SL DVD's contain a hybrid file system).
I windows program such as isobuster can make a perfect iso file copy
(provided the DVD is okay) of the SL hybrid install disk that can be
used to burn a backup copy of your SL DVD, either in windows
or Mac (with a good DVD Burner). SL DVD's are Dual Layer 8.3 GB
DVD's, so you will need the equivalent blanks. 
I suspect your  Mac's optical drive is either dirty or failing, causing the
read problems on the Mac.
You can get isobuster here:
http://www.isobuster.com/

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    Message was edited by: V.K.

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