I donwloaded pfsense live cd 2.1.3 and now I want to run pfsense from an usb cdrom drive.
It loads a while and than crahses with "unable to mount ..."
I know I have to choose boot option 3
in order to boot from an usb cdrom but I don't see this menu.
The computer just boots. Do I need to press a specfic key to bring up this menu or is this maybe missing on the current iso?
Solved it,
to boot from USB Drive, you need boot option number #3
https://doc.pfsense.org/index.php/Boot_Troubleshooting#Booting_from_USB
I just thought the prompt would come very early, like grub or something. But it turned out I had to wait about five minutes (old hardware with USB 1.1 only) for it to show up. And it vanishes after 10 seconds, I think I just missed it the first few tries.