Brian Tong here with CNet.com, and there are a lot of you out there that have access to Apple's OS X Yosemite Beta program.
But you should not be installing it as your primary OS.
That would be dumb.
So I'm gonna show you how to partition your hard drive and it's pretty easy.
All you have to do, first let's just jump into Applications folder.
And then find the utilities folder, open that, and the app you want to launch is Disk Utility.
Now, on the left hand column, you'll see your listed hard drives.
And select the one you want to add a partition to, we're basically separating the hard drives.
Some people do this to load multiple operating systems, and other people do this to organize their hard drive for media file management.
Now once you've selected the hard drive of your choice, you'll see a few options on the right hand side and you want to click on partition.
It will show you the current capacity of your hard drive and if you look at the bottom corner, you'll see a plus button to add a partition.
Click on that, and you'll now see two partitions and you can slide this bar up and down to create the size of the partition you want based on how much hard drive space you still have available.
OS10 Yosemite takes about 15 to 20 gigs so you want more than that.
You'll also be able to name this new partition as well.
When you're good to go hit apply and voila!
Your hard drive will now be partitioned.
Then all you have to do is when you run the OS 10 Yosemite Beta installer is select a new partition you created.
As a destination, and booyah, you can now run the OS X 10.10 Beta side by side with Mavericks on your other partition.
I'm Brian Tong for CNet.com.
And there's your how-to for partitioning your hard drive on a Mac.
Use it wisely.