Is it possible to install or backup just my current Windows OS directly onto another hard drive? Especially wondered if it was able to do it via 'click-drag' from the main OS folder's window to the other HD folder's window.
No it won't work, you need to get the setup of the disk correct. You need a software such as Acronis True Image or Norton Ghost, this will copy everything including the file system.
No Problem. If you use Acronis, there is a 15 day trial, which should be enough to get the transfer done.
Nice tip there BigDK, do you know which one or if any also allow the option to back up select files only?