You only need to follow parts that describe copying files out of cd. 
Then replace kernel that is served over nfs with your desired kernel. I 
would also replace kernel that is installed with your desired kernel. Do 
not replace user land or installation files. Burn new cd and see if it 
works. I would make an image and boot it in virtual machine like 
http://www.virtualbox.org/. I tried it and it works well with virtual 
box. Saves you some cds.

Regards,
Alex


James Hartley wrote:
> On 6/26/07, *Alex Pelts* <alexp@broadcom.com 
> <mailto:alexp@broadcom.com>> wrote:
> 
>     Please see restore cd howto.
>     ...
>      > On 26/06/07, Izumi Tsutsui <tsutsui@ceres.dti.ne.jp
>     <mailto:tsutsui@ceres.dti.ne.jp>> wrote:
>      >> ...
>      >> Please try 4.0_BETA2 kernels (which should work with old userland):
>      >>
>     ftp://ftp.netbsd.org/pub/NetBSD-daily/netbsd-4/200706250002Z/cobalt/binary/kernel/
> 
> 
> I apologize for the newbie question, but I'd like to play too.  The 
> Restore CD Howto specifies to copy everything from this point in the tree:
> 
> ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-3.1/cobalt/
> 
> Not to be pedantic, but is the following directory correct for making a 
> 4.0 BETA-2 Restore CD?
> 
> ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-daily/netbsd-4/200706260002Z/cobalt
> 
> Thanks.