On Tue, May 15, 2007 at 12:12:11PM -0600, John R. Shannon wrote:
> David Laight wrote:
> > On Tue, May 15, 2007 at 09:49:40AM -0600, John R. Shannon wrote:
> >> After a fresh installation of 4.99.19 (10 May) on a SCSI drive (sd0) the
> >>  system would not boot reporting no OS.
> > 
> > Exactly what text is output as the error, and what is the previous
> > output (if any) ?
> 
> NetBSD MBR boot
> Error No operating system
> DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER

Ok, so we have read in sector zero, but when we read the first sector
of the partition either the first bytes are zero, or the last aren't 55aa.

Possibly the LBA-CHS translation is broken, try using the mbr_ext code.
(fdisc -c mbr_ext rsd0a).

	David

-- 
David Laight: david@l8s.co.uk