Hi all,
I have a Compaq OS restore DVD (2 disc set). I want to duplicate the first disc. I can extract an ISO using ImgBurn or the files using IsoBuster and even get the boot image file from either program. When I burn a new DVD and boot off it the computer boots, does POST, then the screen goes blank with a blinking cursor. I've tried a few variations (i.e., 5 discs...) of burning with no difference.
This is what I know:
- the original disc has ISO9660 and Joliet file systems and a "Bootable Disc" folder (with .img and .cat files)
- when I use ImgBurn to extract the ISO I get a MDS file with it
- when I burn to disc, I use both file systems, use hidden/system files, boot image file (file name "BootImage.img" on hard drive, same as on disc)
- tried with and w/o the MDS file
- the ISO ImgBurn creates from the original DVD is 4,201,447,424 bytes but when I extract the files (using IsoBuster) and compile it back into an ISO it is always 4,104,912,896 bytes
- I can use IsoBuster to review the new DVD or compiled ISO and it looks like the original except for the boot image filename (see below)
- using ImgBurn 2.5.0.0 and IsoBuster 2.7
Besides the obvious question of 'how do I do this?', I have a few others, since I am pretty new to this stuff:
a) Does the name of the .img file on the new DVD matter? (sometimes it is "unknown.img", "ImgBurn.img", or "BootImg.img"<--original name)
The ImgBurn documentation indicates that if you get a MDS file when you create an ISO from the DVD, you'll need to use it when you burn the DVD.
Does this mean you have to recompile the files into and ISO first before burning, instead of just writing the files to disc?
c) Why isn't the file size of the original ISO and compiled ISO the same? (Even if I don't change anything, but just extract and compile it will be different as shown above.)
My ultimate goal is to modify one of the text files off the DVD then burn the duplicate, but I can't even make an exact duplicate yet! :-(
Help would be much appreciated,
Justin