Booting FreeBSD 6.0 install CD hangs

[manfred]

Trying to install FreeBSD 6.0 RC1. When booting it hangs.

I see:
.....
acd2: Mechanism: ejectable tray, unlocked.
acd2: Medium: no/blanc disc
acd2: <NEC DVD RW ND-3540A/1.01>
      DVDR drive at ata3 as master
GEOM: new disk ad0
GEOM: new disk ad1

After the last acd2 message it take a whil (half a minute or so) till teh
GEOM messages appear. Then nothing happeened for over 15 minutes and I
gave up.


What means do I have to track it down?




-- 
Manfred