I got a new hard drive (a 120 GB solid-state drive) and am prepared to install Windows 7 Home Premium 64-bit on it. In the past, I've never made separate partitions on my HDDs, but I've heard some people recommend that I create one solely for my OS files for various reasons (so I can wipe the OS files without wiping my personal files and vice versa, to keep potential viruses in my personal files from affecting my OS files, etc.). Would you suggest I do this, and if so, what size partition should I create? Keep in mind that the HDD is only 120 GB. I also hear that some people create this extra partition for not only their OS files, but also for their program files. I've heard someone say that 30 GB was more than enough for their Win7 OS files, so I'm considering making a 25 or 30 GB partition for just my OS files and keeping my personal and program files in the remaining 90 GB. What do you all think?