Cannot run RHEL 7 from USB /dev/boot missing

I'm having some issues trying to test my USB installer for RedHat Enterprise Linux Desktop Workstation. From the boot screen I selected Test RedHat and Install, but after a while I get hit with bunch of errors from dracut-initqueue saying it timed out repeatedly followed by /dev/boot is missing.

I have the DVD iso on the USB installer, assuming that's the right one to use, same as every other Linux installer that uses DVD in its name. I have never encountered such an error as this before and it's stupid error and that. Why am I having such issues with a usb installer that is missing a critical part as /dev/boot ??

How do I fix this issue?
Another thing is it says I should copy some text file to a USB so I can share it's details, but I can't even use the usual commands for seeing the USB storage device names with fdisk so I can copy it over.

For something that's highly regarded enterprise level systems, this doesn't even look it if it fails the simplest of things when running from a USB stick.