I can't get my 07 Mac Pro running 10.7.4 to boot from a cd or usb drive. I have my home directory on another drive. Can that have an affect on booting for a CD or USB?
I would like to boot BackTrack on my MacBook Pro from a USB drive but it seems impossible. I'm holding the Alt key on boot, but the mac only displays "Macintosh HD", i.e. it doesn't recognize my USB. ...