hi,try this tool this very good soft size just 190kb thanks to VishalGupta for this great tool Many times when we decide to take a backup of our Windows setup CD/DVD on our hard disk, we just copy all the files and folders present in the disk to our hard disk partition. In future if we don't have the disk with us, we try to create a new setup disk by burning the backup files and folders on the new disk. But the new disk doesn't work and you can't boot using it to run the setup. The reason is when you burn a new setup disk, its not bootable and if you don't know how to make it bootable, you are lost. http://www.askvg.com/wbi-creator-free-portable-utility-to-create-bootable-iso-for-windows-xp-vista-and-7-setup/