When Yosemite was first announced with all of its awesome features, I exclaimed on iDB’s group chat session that I would be installing the OS as soon as it was available for download. Sebastien quickly rebuffed my excitement and told me how unreasonable it was to install a beta OS on my main machine, and especially so while I’m out of the country. After being a bit disappointed (that wasn’t what I wanted to hear at all…I mean, SMS texting on OS X!) I eventually came to the realization that he was right.
But then, I remembered that I didn’t need to settle. I could easily create a partition on my Mac and keep Yosemite completely separate from my main (and stable) Mavericks install. It had been a while since I had last messed around with disk partitioning in OS X, but it didn’t take long before I was installing the Yosemite beta on the same Mac where my primary Mavericks install lays its head down at night.
The benefits are multi-faceted. Number one, you get to try out Apple’s new OS right now. Number two, you don’t have to worry about buggy beta software cramping your style; after all, you’re still running your main OS on the a separate partition. Number three, it can be done quickly, and with little to no downsides (as long as you have the disk space to spare). Check inside for our full tutorial that shows you how to install OS X 10.10 Yosemite on a separate partition on your primary Mac.