I'm new to Mac multi booting. I've just installed a triple boot (OS X Mountain Lion + Ubuntu 12.04 + Windows 7 Ultimate) on my MacBook Pro 8,1.
Everything went more or less right. I had the rEFIt menu showing up and all three OSes were just fine. Recently I updated Windows and when rebooting I lost rEFIt. Now when I power on my Mac I don't have rEFIt anymore, and it automatically boots into Windows.
Windows messed with my MBR, right? Any ideas on how I can fix this?