The following reply was made to PR install/31274; it has been noted by GNATS.

From: David Laight <david@l8s.co.uk>
To: Pavel Cahyna <pavel.cahyna@st.mff.cuni.cz>
Cc: gnats-bugs@NetBSD.org
Subject: Re: install/31274: can't install with single large partition easily, sysinst menu is inconsistent
Date: Sun, 23 Oct 2005 11:01:57 +0100

 On Sun, Oct 23, 2005 at 11:29:12AM +0200, Pavel Cahyna wrote:
 > On Sun, Oct 23, 2005 at 10:10:41AM +0100, David Laight wrote:
 > > What does 'sysctl machdep.diskinfo' report?
 > > My guess is 80:39070080(1022/240/63),0 wd0:80
 > > The ',0' indicates that LBA reads aren't (being reported as) supported.
 > 
 > It reports 80:39070080(1022/240/63),2 wd0:80
 
 Which means that LBA reads are supported, so sysinst shouldn't be forcing
 a separate root filesystem.
 But maybe it is getting confused by the small number of cylinders.
 (The code is surprisingly complicated! and doesn't get quite the right
 answer on my test system.  Maybe I'll fix that next.)
 
 > Yes, but how would making a 0.5 GB / starting at 5 GB stop me making part
 > of it unreadable? What is the size limit for non-LBA reads?
 
 Cylinders * heads * sectors! ie 1022 * 240 * 63 ~= 8GB
 So we (believe we) can't go from 5GB to the end of the disk.
 
 	David
 
 -- 
 David Laight: david@l8s.co.uk