![]() There is a commercial product called NTFS for Mac that allows Mac OS X to write to NTFS, but some reviews indicated that the NTFS partition might get corrupted. And while Windows can read HFS+, it cannot write to it. Unfortunately, sharing information between the two operating systems is inconvenient because while Mac OS X can read NTFS, it can’t write to it. See my followup post on Revert Mac OS X Yosemite Core Storage Back to Mac OS Extended HFS+ for details. The solution is to revert the Core Storage volume back to a plain HFS+ (aka Mac OS Extended) partition before following any of the instructions below. Update: Mac OS X 10.10 Yosemite uses a new Core Storage volume manager which does not support merging or re-sizing. This is useful because I found that unlikely applications, like Powerpoint, would switch the Mac OS X to use discrete graphics. Under Mac OS X, there is an neat application called gfxCardStatus which allows me to force Mac OS X to use only the integrated graphics card. I decided to use Mac OS X as often as I could to take advantage of the battery life and only switch to Windows when I needed to. The reason for the short battery and heat (the laptop got very hot under Windows) was that under Windows, the discrete graphics card was active all the time! The Boot Camp 4.0 drivers for Windows did not support switching graphics between the integrated and discrete video cards, but instead used discrete all the time. To my dismay, I found that while the Macbook lasted 6 hours or more while running Mac OS X, the Windows 7 lasted at best 3 hours. I then installed Windows 7 Boot Camp on it. It came with Mac OS X 10.7 Lion which I promptly upgraded to Mac OS X 10.8 Mountain Lion. I recently got a mid 2012 Macbook Pro 15in laptop.
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