*BSD News Article 11073


Return to BSD News archive

Received: by minnie.vk1xwt.ampr.org with NNTP
	id AA1222 ; Tue, 23 Feb 93 14:31:00 EST
Newsgroups: comp.unix.bsd
Path: sserve!manuel.anu.edu.au!munnari.oz.au!hp9000.csc.cuhk.hk!saimiri.primate.wisc.edu!sdd.hp.com!spool.mu.edu!uwm.edu!cs.utexas.edu!hellgate.utah.edu!fcom.cc.utah.edu!cs.weber.edu!terry
From: terry@cs.weber.edu (A Wizard of Earth C)
Subject: Re: how do I undo 386BSD boot blocks?
Message-ID: <1993Feb12.202233.9846@fcom.cc.utah.edu>
Sender: news@fcom.cc.utah.edu
Organization: Weber State University  (Ogden, UT)
References: <1993Feb12.010335.26398@jpl-devvax.jpl.nasa.gov> <1993Feb12.024645.20918@fcom.cc.utah.edu> <1lf98o$fpt@terminator.rs.itd.umich.edu>
Date: Fri, 12 Feb 93 20:22:33 GMT
Lines: 27

In article <1lf98o$fpt@terminator.rs.itd.umich.edu> pauls@css.itd.umich.edu (Paul Southworth) writes:
>In article <1993Feb12.024645.20918@fcom.cc.utah.edu> terry@cs.weber.edu (A Wizard of Earth C) writes:
>>There is an alternate method in INSTALL.NOTES.  Basically, you don't need
>>to fdisk the mbr for a valid one to be written -- you just have to invalidate
>>it.  This can be accomplished with either of the following:
[ ... ]
>>	2)	boot dist.fs or fixit.fs and type dd if=/386bsd of=/dev/wd0a
>
>What does this do?  Not familiar with it and I sort of think I shouldn't
>experiment with it on my system.... :)

Invalidates the mbr and other data at the fron of the disk (if any).  DOS
will only write an mbr when there is not an existing, working mbr.  This
makes sure that there isn't.


					Terry Lambert
					terry@icarus.weber.edu
					terry_lambert@novell.com
---
Any opinions in this posting are my own and not those of my present
or previous employers.
-- 
-------------------------------------------------------------------------------
                                        "I have an 8 user poetic license" - me
 Get the 386bsd FAQ from agate.berkeley.edu:/pub/386BSD/386bsd-0.1/unofficial
-------------------------------------------------------------------------------