We are trying to boot from a nexcom device.  We have tried two devices, so 
we know it isn't a bad image or a bad flash card/reader.

These are the errors we get:

md0: preloaded image </mfsroot> 16777216 bytes at 0xc097a598

ata1-master: FAILURE - SETFEATURES ENABLE RCACHE 
status=51<READY,DSC,ERROR> error=4<ABORTED>

ad2: FAILURE - SETFEATURES ENABLE RCACHE stats=51<READY,DSC,ERROR> 
ERROR=4<ABORTED>

ad2: FAILURE - SETFEATURES DISABLE WCACHE status=51<READY,DSC.ERROR> 
error=4<ABORTED>

ad2: 61MB <SanDisk SDCFB-64/Rev 3.03> [978/4/32] at ata1-master BIOSPI0
ad2: FAILURE - READ status=51<READY,DSC,ERROR> error=10<NID_NOT_FOUND> 
LBA=50581761

Mounting root from ufs:/dev/md0



Fatal error: the dervice that contains the configuration file (config.xml) 
could not be found.  m0n0wall cannot continue booting....