I installed Win 8 Pro on an SSD drive in my main PC at home, fully updated, then connected to my home server.
This PC was originally setup with Win 7 HP, and to install win 8 pro, I disconnected my win 7 HP SSD drive along with my HDD. Then I got to thinking about dual booting (I haven't done that since dual booting with XP and win95/98 etc). Whilst debating this in my mind, not really wanting to mess with my Win 7 HP install, it's setup just like I want, it's on a 128 GB SSD drive, and I didn't want to shrink it. I like having roughly 50% free space on my SSD drives. Then it dawned on me to hook up all the drives and use the mother board's boot menu to select which drive to boot too in lieu of a boot manager (yes, I know, genius).
Once I was in Win 7, I went to the Disk management and removed the drive letters from the Win 8 drive (both partitions, system and OS), then booted to win 8 and did the same with the Win 7 drive.
My HDD is a 1TB drive that I was only using half of, so while in win 8, I created a new volume on the remaining half, removed the drive letter from the original volume.
Launched dashboard to reconfigure the backup to include only the win 8 system/OS drive and the win 8 partition on my HDD, same for when in Win 7.
Seems to work fine, wasn't 100% sure how the server would handle it, considering both clients use the same wireless network adapter and lightsout show both clients to have the same IP. Figure it shouldn't be an issue since both can't be on at the same time.
Beats dual boot any day, IMHO.