Use the ' Disk Utility (10.10).sh' script provided by ' geoff-codes' on GitHub. Thanks to Justus Beyer who posted this fix initially. You can read the original article HERE, and I will post an abridged version below for everyone.
I did not come up with this method, but I figured I would share it here, as it has done wonders for me. The following guide is a culmination of various sources across the internet and results in a way to run the classic, Yosemite Disk Utility app under El Capitan. Building a CustoMac Hackintosh: Buyer's Guide
