Subject: Okay, now I'm stumped.
To: None <email@example.com>
From: Peter Seebach <firstname.lastname@example.org>
Date: 05/25/2000 11:53:50
Would someone with some scratch space kindly verify whether or not I'm
$ dd if=/dev/cd0a of=cd
I believe this should come up with a CD image.
It comes up with something 4 times the size of a CD image.
I am assuming this is because CD's really use 2048-blocks, not 512-blocks,
but "disklabel cd0" reports partition sizes in 512-blocks.
Thus, given the 1.4.2 CD I picked up at Comdex, disklabel says:
total sectors: 285442
but then says:
a: 1141768 0 ISO9660 # (Cyl. 0 - 11417*)
So, what am I getting? What I seem to get (tested this both on i386 1.4.2 and
Alpha -current) is 4 copies of each 2048-block. I am totally unable to
explain this. I can see that what's happening must be some confusion where
each of the 512-blocks in a 2048-block comes back as all 2048 bytes of data,
but isn't that impossible?