can't install F7T3 off usb hard disk from DVD iso file with boot.iso

[John Poelstra]

Mark Schlegel wrote:
> I frequently install Fedora by downloading the DVD iso file
> for installation via the boot.iso burned to a CD where the
> DVD image iso file is on a usb hard disk (/dev/sdb1 )
> On previous fedora's I usually used
> 
> boot:  linux askmethod
> 
> but for FC7T3 it seems you use the menu, and select the top
> row "install or update..." and eventually you get to
> "Installation Method".  I selected Hard drive and 
> sdb1 as the device (correct for the usb drive with the 
> DVD image on it). I used F2 to work into the drive
> to select the DVD file.
> 

I agree.  What happened to the "boot:" prompt and can we bring it back? 
  What was the thought behind removing it?

John