The only way would be to get a program like wipedisk or to have the CD, do to the reason that all of your boot files and everything that make your windows be windows as a operating software would be erased if you were to reformat your hard-drive. Windows seven is better so just go get it, its going to be like 50$
You can use a third party software such as Partion Magic - Load the Disk, Thumb Drive, or CD/DVD and use the Delete Partion =>then Format Commands -- It will wipe out everything on the disk if that's what you want.
open CD drive insert windows vista disk and run it
No. Windows Vista is not based on DOS and a DOS boot disk will be unable to read the file system that Vista is on.
Yes, you can
Of course, backup all your files to an external hard drive and perform a clean install with your Vista disk. They only make it easy to upgrade never downgrade. If you do not have an external hard drive, create a disk partition to use as your file backup.
Windows PE is running on a RAM drive
The floppy disk has nothing to do with the operating system on the hard drive. You can use a floppy disk created in Windows XP to boot a computer that has Windows 2000, Windows 98, Windows 95, Windows 3.1, Windows Vista, Windows 7, Linux, Solaris, FreeBSD, etc...
There are many ways, but the easiest is to use a Windows 7 installation disk to delete the partition.
No.
Check that you have no disks in either the floppy disk drive, or the cd/dvd drive. Check that there is only one operating system installed... if you have Windows Vista and Windows XP then the computer will need to know which one you wish to use.
Yes, if you have copied all installion files on your hard disk. If you haven't you cannot reinstall Vista.
dynamic disk
Yes