Do i have to buy a new ssd for Yosemite installation?

[yzy1993531]

Is there any method to install Yosemite on one of two partitions of my current ssd drive, another one is for Win? Or this hackintosh has to take one single drive?
Thanks

 

[jaxonday]

Go to Launchpad-> Other->Disk Utility.

Select the SSD on the left side and then partition on the other. It seems like everything id grayed out and not changable but it is. There is a little + at the bottom left of the partition layout box. click it once and it will show 2 partitions. Select the partition that does NOT have OS X on it, on the format drop down select free space, then apply. You now have a separate partition in which you can install windows.

I have always installed OS X first and then Windows since you need a boot loader for OS X and can use it to boot windows also.