[solved] Can't boot pfsense installation from USB

[nicolaj]

I have an older 2gb verbatim usb stick. I download pfSense-CE-memstick-2.3.3-RELEASE-amd64.img.gz and use rufus, set it to DD and create. I tryed extracting the img from the gz file and do the same thing, can't boot and i don't know why. I tried creating a linux mint 64bit live usb drive and that booted fine.

Using an HP dc7800p, it recognizes the usb drive fine in the bios, and bios is set to boot from usb first. But i only get a blinking _ in the upper left corner of the screen.
Any ideas ?

Edit: figured out it was caused by a bug in the bios, preventing booting any OS that requires the harddrive. A linux live usb would work tho. Installing from cd was the only option.