no startup

Hello All, So i have been working on this issue for quite some time, fixed it and now its back.I had a thread about this already but i decided to make a new one, and make it a little bit less messy. and to maybe help people having the same issues. The ProblemThe problem began a little bit over...

I have 2 identical startup OSX drives and a windows 7 drive. After updating to 10.5 my normal startup drive "Macintosh Hard Drive" would boot even though selected in BIOS as the startup drive without first being selected by interrupting the boot up process and selecting it. I absentmindedly...