(note this is a guest post from Tenox)
Jason’s note on hybrid bootable ISO reminded me of a recent discovery. I have a bootable USB pen drive that I wanted to boot in VMware Workstation. Normally impossible, but there always is a work around! Turns out the problem is with the VMware built-in BIOS and more specifically lack of USB boot support. All you have to do is get a bootable media, floppy or CDROM with a boot loader that can redirect you to the USB device. I’m using Plop. Important thing to remember is to connect the USB pen drive to the virtual machine in a pass through mode. Also it’s very very slow.