I used it to get Windows installed on a new PC.
If you can use Ubuntu either via another machine or a simple Bootable USB version (I only had a Mac and a Windowless PC - and nothing I did on Mac properly allowed the Windows boot drive to actually launch from BIOS), once you get the Windows.ISO onto Ubuntu you can use WoeUSB (this tutorial helped me a lot) to make a nice bootable Windows USB.
Afterwards, you can use the step-by-step setup as you normally would to install and setup OS X 10.10 Yosemite. To do that, you need to restart the Mac, and, right after that, press the Option key, and choose to boot from this drive. Now that you have a bootable OS X 10.10 Yosemite USB drive, you may want to install the operating system on your Mac. Like I mentioned before, this depends largely on the speed of the USB drive that you have, so, ideally, you should use the fastest one available, in case time is of the essence. Unlike the official tool baked in OS X 10.10 Yosemite, DiskMaker X lets you know how long the process takes.
If you wish to use DiskMaker X to create the bootable OS X 10.10 Yosemite USB drive, here is what you need to do: At the time of writing this article, however, it is still in beta, which means that there is a chance that you may run into bugs. Like I mentioned earlier, it works with previous incarnations of the operating system the version of DiskMaker X that is compatible with OS X 10.10 Yosemite also works with OS X 10.9 Mavericks and OS X 10.8 Mountain Lion, according to the official page. It automates the process of creating a bootable OS X 10.10 Yosemite USB drive, but it still requires you to know which options to select. The More User-Friendly (Third-Party) ToolĭiskMaker X is the more user-friendly tool for the job. Rest assured that it will, usually in less than half an hour (the time element mostly depends on the speed of the USB drive that you are using - the faster it is the better). But, because it is basically barebones, the tool does not provide any indication as to how much time is left until the process completes. It is virtually bulletproof, gives consistent results, and works without problems.
Now, let's move on to the actual process. (The third-party tool will work, however.)
It may allow you to create a bootable OS X 10.10 Yosemite USB drive using prior iterations of the operating system, but I have not yet tested this and, therefore, there are zero guarantees that it will work. To use this tool, Apple indicates that the Mac that you use it on must be running OS X 10.10 Yosemite.