On Oct 13,  7:13pm, Nick Moffitt wrote:
> On Tue, Oct 13, 1998 at 12:55:59PM -0700, Jonathan Stone wrote:
> > 
> > You mention that the CD is borrowed. 
> > 
> > Are you _sure_ that the CD-rom is jumpered to 512-byte sectors?
> > (NB: if it's working on a PC, or just about anything except a Sun
> > or a DEC box, it probably isn't.)
> 
> 	I'm pretty sure it's not.  Do most CD-ROMs have a jumper for
> that?  Ultrix handled the configuration fine, wich would prove your
> hypothesis that Ultrix had the drivers that could handle it.

  I can't remember if 1.3.2 will do this, but I think disklabel in -current
will report the block size as specified by the CDROM.  My RRD42 does show
512 bytes/sector.  I don't have a non-DEC CDROM currently on a DECstation,
so I'm not sure what it reports.

  I think that perhaps earlier PROMS on DECstation could only work with
512 byte blocks, but newer PROMS or revisions may be able to handle 2048
byte blocks.  I'd be very suprised if Ultrix was not able to deal with
both.  [I don't think NetBSD handles UFS/FFS filesystems with 2048 byte
blocks.  I've tried playing with that a bit, but was not sucessful at the
time.]

Michael

-- 
Michael L. Hitch			mhitch@montana.edu
Computer Consultant
Information Technology Center
Montana State University	Bozeman, MT	USA