Booting a 4.9 Beta CD on a USB CD/RW?

[Andrew P. Lentvorski, Jr.]

Can anyone give me some pointers about how to boot a 4.9 Beta CD on a USB 
CD/RW?  Or, at the very least, tell me that it doesn't work and that I 
should quit trying.

I get the 2.88 MB floppy message and then the boot fails with the 
messages "Not ufs", "No /boot/loader" and "No /kernel".

This same CD boots fine in a standard ATA interface CD/RW.

Even more annoyingly, a RedHat 9.0 CD boots fine from my USB CD/RW.

Any help or pointers would be appreciated.

Thanks,
-a