Cannot Install 2.1.4 On Supermicro A1SRI-2758F - New Build ROOT MOUNT ERROR

[mo99421]

Hello,
Noob having issue with initial pfsense install on a new build.  Installing from USB stick
Default install gets "ROOT MOUNT ERROR".

Mobo:        Supermicro A1SRI-2758F
Memory:    2x4GB Kingston KVR16LSE11/4  ECC SO-DIMMs
SSD:          Samsung SSD 840 PRO  128GB
USB Stick: Kingston DT 101 G2 USB Device (4GB)
Pfsense: pfSense-memstick-2.1.4-RELEASE-amd64.img.gz

Listing valid disk boot devices shows "ad12".  Tried to enter:

mountroot> ufs:/dev/ad12

Still getting ROOT MOUNT ERROR

Appreciate any help!

[q54e3w]

I recall reading re Samsung drives and ahci not playing nice together…try disabling ahci.

[mo99421]

Changed SATA Mode from AHCI to IDE.  Same response from default boot:  ROOT MOUNT INVALID

Other ideas?

[mo99421]

More info:  Installing from USB stick and selecting option 3 (Boot From USB Stick) from the menu causes a hang condition - see attachment.

[q54e3w]

Are you using a usb2 or 3 port? Try 2.

[mo99421]

WORKED!!

Using usb2 port.  Thanks irj972 !!