There are, for sale, disks that are called "repair", or "recovery" "install", "reinstall", "boot" or any combination of those. These are cheap and do not include any Licensing.
Is there such a thing as a disk that is just made to fix the currently installed windows OS, without deleting anything data that doesn't have to be deleted?
It's confusing to me. As I was shopping, thinking about my options, I noticed a disk for Windows XP Pro, billed as a "recovery, reinstall" disk for DELL. It says it will "reinstall to a blank hard drive".
Why would it be specific to a make (Dell)? If the disk is an installation disk, couldn't any iso do the job?