So, I was looking at a NetBSD 1.4.2 CD, and I noticed that it claims to have
~110,000 sectors in cd0a, which is about right if they're 512-byte sectors,
but it also claims to have 2048-byte sectors.  The end result is that I can
'dd' at least a full gigabyte off of a ~550-580MB CD-ROM.

Feature?  Bug?  I certainly found it surprising.  I was using bs=2k, I'm not
sure if that's relevant.  (Hmm.  Nope, same problem using bs=512)

(Actually running 1.4.2 on that system, FWIW.)

-s