Unable to boot from umass(4) since 8.1

[Clarence Chu]

Dear Sirs:

I was unable to boot from umass(4) devices with the following symtom:
1) kernel and all loader.conf modules were loaded
2) unable to mount ufs:/dev/da0s3a as root,
3) when "ufs:/dev/da0s3a" was supplied to the mount prompt,  mounting
     continue.

situation persist on using USB->IDE converter and USB key.

the umass(4) devices were able to boot using  [67].x but refuse to work
with the  8.1-STABLE as of today.

Any suggestions?

Best wishes,

Clarence CHU