From: utzoo!decvax!harpo!npoiv!npois!ucbvax!C70:info-cpm
Newsgroups: fa.info-cpm
Title: CCS bug!
Article-I.D.: ucb.1584
Posted: Fri Jul 23 21:27:18 1982
Received: Mon Jul 26 06:34:29 1982

>From G.dag@Ucb-C70 Fri Jul 23 21:27:01 1982
In some cases track 0 is of a different density thank the other tracks.

I know of at least one case where, when the disk is formatted at
1024 bytes/sector, track 0 is actually 128 bytes per sector.  You
might wish to check with the 1791 (I think that's whats in the CCS)
controller chip specs for the track format.  Also, try some of the
utility programs that should rely on the disk parameter block.  They 
are generally considered operable regardless of disk density.  Some
of these are DU (A disk hacking utility), and SAP (sort and pack
directory).  Be sure to use the latest versions and test them on
non-critical disks.

Good luck,
David