svn commit: r195817 - head/usr.sbin/sysinstall

[M. Warner Losh]

In message: <4A68DA56.60301 at samsco.org>
            Scott Long <scottl at samsco.org> writes:
: M. Warner Losh wrote:
: > In message: <4A66D0F4.4030108 at FreeBSD.org>
: >             Alexander Motin <mav at FreeBSD.org> writes:
: > : Colin Percival wrote:
: > : > Author: cperciva
: > : > Date: Wed Jul 22 03:50:54 2009
: > : > New Revision: 195817
: > : > URL: http://svn.freebsd.org/changeset/base/195817
: > : > 
: > : > Log:
: > : >   Remove the "dedicated disk mode" partitioning option from sysinstall, in
: > : >   both the disk partitioning screen (the 'F' key) and via install.cfg (the
: > : >   VAR_DEDICATED_DISK option).  This functionality is currently broken in 8.x
: > : >   due to libdisk and geom generating different partition names; this commit
: > : >   merely acts to help steer users away from the breakage.
: > : >   
: > : >   Submitted by:	randi
: > : >   Approved by:	re (kensmith)
: > : > 
: > : > Modified:
: > : >   head/usr.sbin/sysinstall/disks.c
: > : 
: > : Is there any other way to not align FS block to the ugly legacy 63
: > : sectors per track boundary with sysinstall now? I think RAIDs won't be
: > : happy. May be it would be better to fix it?
: > 
: > The reason we do it like this is because the boot blocks occupy the
: > first cylinder group.  Which with today's fake goemetry is 63
: > blocks...
: > 
: 
: I already covered this.  Unfortunately, Randi didn't take my bait. 
: Anyways, '63' is a minimum, it's not a singular value.  It's also
: an incredibly bad default.

Yes.  256 is just as good as 63, unless the geometry reports more than
256 heads, which I don't think is possible...

Warner