So on my MacBook I have two partitions, one for Snow Leopard at 200GB in size, the last 30GB went to the El Capitan beta. I ~need~ both operating systems. Now the problem, 30GB. El Capitan needs way more. Im booted into the recovery partition and this lovely new disk utility will allow me to resize any damn partition except the el Capitan one. I tried expanding the drive under snow leopard but it tells me I need a newer OS to do it. I don't know what to do except delete El Capitan as a hole and reinstalling it on a bigger partition. This is not "simplicity" this is crippling a tool that was never broken. Any suggestions? I really don't want to have to reinstall Photoshop and etc.