Hey everybody, I installed a new 1Tb HDD and partitioned it 4 ways. On the first partition I added Mavericks 10.9.4. On the second partition I added Snow Leopard 10.6.8. The 3rd and 4th are still open. My questions are: 1) How do I choose which OS to boot into safe mode? I tried booting into safe mode and it automatically boots Mavericks into safe mode. 2) I know this may be weird but having both operating systems on here is affecting the boot chime sound, making it tons quieter, creating problems when troubleshooting arises. How do I solve this volume level issue? And what other common problems have been seen with dual OS X's on one HDD? Thanks everybody and have a good one.