Replace [USB Drive Name] with the actual name of your USB drive.
Developers and testers often use ISO files to run Yosemite in VMware, VirtualBox, or Parallels to test legacy app compatibility.
: You must be running at least OS X Snow Leopard 10.6.8 or later to download Yosemite. Step-by-Step: Creating a Yosemite ISO
hdiutil detach /Volumes/Install\ OS\ X\ Yosemite hdiutil convert /tmp/Yosemite.cdr.dmg -format UDTO -o /tmp/Yosemite.iso