I recently replaced my laptop with one that has an absurdly tiny hard drive. However, I still have my old laptop, which is no longer functional but does have a functional HD. Thus I decided to remove my old laptops HD and make it an external one to supplement my new laptops tiny internal HD.
My problem is that my old HD has a full windows installation and a bunch of other duplicate software on it that is no longer needed, along with allot of things I do want to lose. I'm trying to figure out the cleanest way to remove all the software that I want installed on my internal HD, including the windows installation, from my external HD without wiping all the things I still wish to retain.
Do I need to boot up off of the old HD to easily remove software, or is there a tool that will assist me with doing that without changing my boot config? While this is less important is there a way to remove the windows I don't think I need but still keep the license in case I want to reinstall that windows installation somewhere one day?