Alix APU1C4, pfSense 2, & sdcard boot delay

Reference:

https://forum.pfsense.org/index.php?topic=74301.0

When installing pfSense 2, specifically observed on 2.1.3, on the Alix APU1C4 using a sdcard, the boot loader will fail to mount and load from the boot partition. To correct the fault, use a kernel parameter to 'delay' mounting the sdcard.

1. boot using 9600 baud and interrupt to boot:
2. boot: set kern.cam.boot_delay="10000"
3. boot: set vfs.root.mountfrom.options=rw
4. boot: /boot/loader
5. # /etc/rc.conf_mount_rw
6. create # vi /boot/loader.conf.local to avoid overwrites during updates versus using loader.conf
7. Add kern.cam.boot_delay="10000"
8. # /etc/rc.conf_mount_ro
9. # exit