Pfsense Mount root error Board Epia m1000

[ehvc]

Hello,

I am new @ PF sense and stuck for a few days.

I want to install an embedded version of PFSense on a Epia M1000 with a 4gb stick and 512mb memory.
I am installing from a CD Drive with version "pfSense-2.0.1-RELEASE-i386.iso.gz"

Put the CD in it.
Option 1 for standard.
option I for installing
Quick install
Reboot
Opening Serial on the PC.
Then 1 get the option 1 for boot default.

Then it give me a mount error.

Output:
Root mount waiting for: usbus3
Trying to mount root from ufs:/dev/da0s1a
ROOT MOUNT ERROR
If you have invalid mount options, reboot, and first try the following from the loader promt:
set vfs.root.mountfrom.options=rw

and then remove invalid mount options from /etc/fstab.
…..

Does anyone have a idea what I am doing wrong.

Thanks

Greats Vincent