When I'm starting up the NetBSD Installer from the LiveCD, it gets stuck on one
portion of the configuration process.  Here's the error:

cannot mount root, error = 19
root device (default cd0a):
dump device (default cd0b):
file system (default cd9660):
root on cd0a dumps on cd0b
cd0 (piixide0:1:0): check condition on CDB: 0x00 00 00 00 00 00
Sense Key: Not Ready
ASC/ASCQ: Medium Not Present

I'm trying to install it onto a USB Key Drive that will run on an i386 system.
Any help is greatly appreciated.

Thanks.