In theory, what I want to do is very simple, but I've done some google research and read some posts on this site and I'm still confused.
I want to keep win7 on my primary C:\ drive, and install Ubuntu (12.10) on a secondary drive (that I have yet to buy or install... just want to know 100% that I'm not going to screw the pooch when I do this). If at all possible I'd also like it such that when I start the computer I have the option to boot either Win7 or Ubuntu, like an account log in type thing where I just pick which drive I'm running with that day. And just to reiterate, I do not want to partition my C:\ drive or alter, change, or affect my Win7 system in anyway.
The reason I'm still fairly uncertain about all of this, is that a lot of the guides I've read have been for ubuntu 9 something or Ubuntu 10 something or other. Also the vast majority of guides are about partitioning one drive to fit both OS'. I want two separate OS running from two separate drives that I can pick at boot. The guides I did find mentioned that there is some issue with the grub being installed on C:\ but the rest of the OS being installed on the other drive... is this still the case? How do I avoid that?
Also, if it helps, I've been running 12.04lts on my laptop for a few months now in class and what nots and I love it.
Finally, if you could please point me to a guide or write your answer in the form of a guide for a two year old that'd be awesome. I'm still an Ubuntu noob and I don't want to mess up my win7.
Thanks in advance and sorry if this is a duplicate or something.