System hangs on DVD device

[Justin Smith]

FreeBSD jsmith.org 5.3-BETA4 FreeBSD 5.3-BETA4 #0: Fri Sep 17 03:00:30 
EDT 2004     root@:/usr/obj/usr/src/sys/MYKERNEL  i386

When I try to boot, I get (after a while)

acd1: DVDROM <JLMS DVD-ROM LTD-166S/DS08> at ata1-slave UDMA40

and then

ATAPI-RESET time = 50us
ATAPI-RESET time = 180us

endlessly repeated.  I can only boot the system after unplugging the DVD 
drive.

Any suggestions?

-- 
Time blows wildly against my door       | Justin R. Smith
Stirring discarded sorrows      	| Mathematics Department
Like dead leaves of summers past        | Drexel University
Shadows of what went before          	| Philadelphia, PA 19104
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New hopes, new fears,                   | Office: (215) 895-1847
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