booting into memory

  Hi, has anyone edited the grub.cfg on the Debian 13 live CD to get it 
to boot completely into memory? I would like to do this so I can remove 
the USB drive, but I must be doing something wrong. I tried adding the 
toram option in a couple places, but it doesn't work like it use to in 
ubuntu or I forgot the correct way. It has been a few years. If any of 
you knows the correct way to edit that file to load the CD into ram I 
would appreciate any help. Thanks in advance.