Repeated PXE jumpstart

[Jan Grant]

On Fri, 21 Sep 2007, Erik Cederstrand wrote:

> Found the answer elsewhere, so this is just for the records...
> 
> # sysctl kern.geom.debugflags=16
> # dd if=/dev/zero of=/dev/ad0 bs=512 count=1
> 
> wipes the MBR and solves my problem.

The alternative is to put PXE ahead of the HD in the boot order, and 
call back to the deployment host at the end of installation (prior to 
reboot) to signal a DHCP reconfiguration.

It adds a PXE timeout to each boot; the upside is that replacing a 
wedging or otherwise broken install is just a matter of reconfiguring a 
DHCP server.

-- 
jan grant, ISYS, University of Bristol. http://www.bris.ac.uk/
Tel +44 (0)117 3317661   http://ioctl.org/jan/
Random act of violence against bread: whole pint.
  -- extract from the "Hawk the Slayer" drinking game