Hello community! I recently wiped my Mac OS X 10.10 Yosemite setup off my MacBook Pro 15" Mid 2010, because of major wifi connectivity issues. Now I was ready to go to give rEFInd and triple booting a shot. I partitioned my HD into three partitions: 1x Mac OS X Mavericks, 1x Windows 8.1 and 1x Ubuntu 14.04 TLS Since OS X is my main working space, I discovered battery life wasn't performing very well. With Yosemite the battery lasted for at least 6 hours and under Mavericks its just 3,5 hours max. I already had installed Mavericks when it came out and battery life was comparable to Yosemite back then. So Mavericks can't be the culprit. May rEFInd be the cause? Is it even possible?