i just installed a new 2nd, (750 gb) hard drive into my g5 because my first 250gb is nearly full. I'm trying to launch logic but the file is way to big. It wont let me install this program from my new, second hard drive because the message i get is that it supposed to launch from the primary or running hard drive. Can anyone tell me how i can make my second hard drive my new primary hard drive? I got the .dmg for my leapord osx. but not the originals anymore. can anybody help me with this. i'm pretty sure it's simple, i just don't know how to do this.