|Well, it used to be if you had two drives, Windows had write some boot files to the 1st one in series, regardless of where you installed the OS. So, if you had say XP Pro on the 1st HDD and dual booted and put 7 on the second, some of 7's boot files would end up on the same drive as the XP install.|
Whether this has changed or not with SATA I'm not sure as I've not done much PC hardware (other than my own) in the last 8 years or so.
You might want to place a call to the place you bought your SSD and ask them if it matters with SATA controllers like it used to with IDE (PATA) controllers before you begin your install. With SATA controllers, it may not matter and all essential files will be put on the SSD regardless of where it is in relation to other devcies in the controllers.
Someone else who helps out in there with more knowledge/experience working with SATA may also be able to definitively answer your question.
I just know if it was me, I'd make sure the SSD was "SATA 1" and all other SATA devices were unplugged during the install process. I'd also ensure they showed up as SATA 2, 3 etc during POST after plugging them back in.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.