The BIOS for VMs in VMware Fusion 5 does not seem to let you boot a USB disk, which say, is handy for configuring ESXi after you have installed it to a USB key, but before dropping said key into your homelab. Inconvenient at best… to get around this:
- Download Plop Boot Manager from here
- Mount the ISO and the USB disk on the VM
- Once booted, choose USB:
Thanks to this 2010 post on the same.