Mac os boot to ram
 

I have been using Debian 7 from a USB flash drive on a PC for a while and at boot up Debian 7 gives edit options for start up which is what I use to "boottoram". There are a few Linux USB creators for MAC OS and I was wanting to know if it was possible to boot to RAM on a Mac Mini with OS X the same way from any of the available Linux distributions from these USB creators. It does not necessarily have to be Debian. My other option is to use a Linux distribution that automatically boots to RAM such as Knoppix or there are a few others providing these USB creators for MAC OS offer these Linux distributions that automatically boots to RAM. Does anyone have any ideas?