I recently resolved an issue regarding mavericks due to the help of you guys, but now Im on round 2. So I installed yosemite on a 250gb partition on my mid 2010 mbp, apparently yosemite decided to hide my 10.6 partition and turn it into a "install drive" and i can no-longer boot to it without it acting as if it is a Yosemite install DVD (it even renamed it to Install Drive).
I will update if i find a fix
I will update if i find a fix