I'm finally going to update a Win7 machine to 10 but thought I'd ask a quick question first. 
I have 2 drives in it, a 250gb SSD which the OS has and a 1tb 3.5" for media etc. Given that I'll do a wipe of the SSD and simply install 10, is there any reason to worry about the new OS simply picking up the 3.5" and carrying on as usual? I'll do a backup of that too of course, but thought I'd just check if there's any hidden issues with a new OS reading an already in use HD?
Any advice much appreciated.

I have 2 drives in it, a 250gb SSD which the OS has and a 1tb 3.5" for media etc. Given that I'll do a wipe of the SSD and simply install 10, is there any reason to worry about the new OS simply picking up the 3.5" and carrying on as usual? I'll do a backup of that too of course, but thought I'd just check if there's any hidden issues with a new OS reading an already in use HD?
Any advice much appreciated.