Are backup files safe to delete in Vista?
On One Hand: Delete Only If You Have Another CopyWindows says that it is only safe to delete Vista backup files if you already have another copy of the files. In other words, don’t delete the most recent version of backed up files, or they may be gone forever.On the Other: Most Files Can Be RestoredIf you do delete backup files and then need them again later, you’re in luck with Vista because you might be able to restore those files.