80x Boot Codes
- Make sure that cdsh.bin is at the proper location.
- If the image size is 1.5gig+ then mount the image using a virtual CD program and reference the drive in Virtual PC instead of the .ISO directly.
- Make sure you are using an agreeable mkisofs for what you are doing. There are quite a few modified versions.
(Try using the mkisofs that is included with Bart's PEBuilder.)
Please post the structure of your image after it was made with mkisofs. Your problem most likely is incorrect file/folder placement.
Nlite allows you to build a ISO with a custom boot loader using mkisofs. Perhaps you should try building through it's GUI and see if that doesn't help you find where you are going wrong.