Thank you for taking the time to respond.
As I stated in my original post, I successfully restored using the original DVDs -- they are not defective.
I burned the original DVDs direct from Ghost -- I am not aware of any other method to burn a Ghost image.
An ISO image is an exact "bit copy" of a disk, so even "hidden" data would be transferred.
Making a new Ghost image onto a hard drive will create a single GHO file (in this case, about 9 Gb in size), not multiple files. So I wouldn't then be able to "just save to DVD".
So the question remains -- how do I backup a Ghost image (i.e., multiple GHO files on two DVDs) to a hard drive so I can later burn the files to new DVDs and have them recognized as a valid Ghost image by the Ghost software?
Thanks.