Quote Originally Posted by nameck
my mistake was, when i burn the cd,
i burn it as bootable disc..
That was one of your mistakes. I knew that as soon as I saw the DR-DOS reference. But I expect that you have made other mistakes also, like not checking the md5 sum. So I pointed you to the FAQ, which covers all of the things that you'll need to know. If your next CD doesn't boot you'll want to read the entire FAQ and understand why.