Hello!
I decided to make a new thread, so I won't be hijacking another member's thread. I have an Optiplex 9020 micro pc variant, running on an i5 4590 (haswell), intel 4600 (onboard gpu), 8gb RAM, 500gb HDD (not SSD). I followed @Jake Lo's guide and I was able to create an El Capitan usb installer, I was able to boot to clover and start os install but during installation, after a few minutes where apple logo appeared with progress bar, it just stopped and screen showed a stop symbol.
I'm wondering if it is because i'm not using an SSD or something else?