Boot disk : A boot disk (sometimes called a startup disk) is a type of removable media, such as a floppy disk or a CD, that contains startup files that your computer can use to start Windows. The startup files are also stored on your computer’s hard disk, but if those startup files become damaged, you can use the files on a boot disk to start Windows.
windows 7 boot
windows 7 boot disk
Window 7 : Window 7is currently release of Microsoft Windows , a series of operating systems produced by
Microsoft for use on personal computer , laptops etc.
Some New feature of window 7 support for virtual hard disk,Improoved boot performance.etc.