If you dedicate a single drive only to Window's folder (which takes around 10Gb for Win7), you'd be wasting a lot of space (30Gb+).
Still, I'm not sure if you can do that. I know you can change the User folder location, but NTFS doesn't supports hardlinks among different drives, and I don't think you could fix that with softlinks only. Not counting bricking the install in the middle of course.
My current Windows folder (that's just the system folder) is 30 GB. I wanted to leave room for updates and the like.
It's possible via a change of the registry value that changes the default location and then a ROBOCOPY via a install disk and then apparently a junction to the new location just in case. That's done after the installation finishes.
What programs are you planning to install?
Visual Studio 2010/2012's toolset, Starcraft, Steam, nothing really fancy. These aren't _that_ big in themselves its just that with them and Windows fighting for space It's unlikely that I'd have the room.
Most installers offer you a choice of where to install them, merely defaulting to ":/Program Files/". It doesn't harm software to be installed outside of Program Files (unless they were poorly made).
I know. . This is really a curiosity for usability. Really if it came down to it I could just make "fake" folders on the separate drive.
Added benefit of wiping Windows and leaving all my files intact.
Just get a larger SSD, the very large ones are expensive but 80GB should cover most of your program installing need.
I regularly fill the 256GB of my current drive so those sizes aren't really up to my requirement. :/. I figured I could just get a cheaper HDD and upgrade when I have the money later.
Have you tried symbolic links? I moved my Program Files directories off of my 32GB SSD successfully using them.
Edit: Using robocopy and the Windows 7 Repair command prompt*
That was exactly my plan. . I was just wondering how Windows behaved during updates, etc. All I could find on Microsoft forms was the _advice_ not to do it. _advice_ is nice but it's not really an explanation. .