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Date:      Tue, 30 May 2000 00:32:11 -0700 (PDT)
From:      Al Goldstein <al@sense-gold-134.oz.net>
To:        cjclark@home.com
Cc:        questions@FreeBSD.ORG
Subject:   Re: dos partition
Message-ID:  <Pine.LNX.4.21.0005300026020.758-100000@sense-gold-134.oz.net>
In-Reply-To: <20000529161339.J58958@cc942873-a.ewndsr1.nj.home.com>

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On Mon, 29 May 2000, Crist J. Clark wrote:

Hi Crist,
I found the answer to my problem in the Linux man page of fdisk.

The first 512 bytes of the dos partition must contain all zeros.

So: dd if=/dev/zero of=/dev/wd0s1 bs=512 count=1

fixed the dos partition. The newfs_msdos formatted it OK.

Thanks and Cheers!

Al


> On Mon, May 29, 2000 at 11:09:29AM -0700, Al Goldstein wrote:
> > Help please.
> > 
> > My dos partition is not accessible by dos (C: not available from A:)
> > or mountable by freebsd.
> 
> OK.
> 
> > The partition table looks like this
> > DISK GEOMETRY 13328 cyl/15 heads/63 sectors=12594960 sectors
> > 
> > Offset 	Size	End	Name	PType	desc	Subtype		Flags
> > 
> > 0	63	62	-	6	unused	0
> > 63	61362	61424	wd0s1	2	fat	6
> > 61425	6142445	6204869	wdos2	3 	freebsd 165		C>
> > ............................................
> > 
> > I'm not able to delete and create dos to start at 0
> 
> That first partition is the MSDOS "Master Boot Record (MBR)." You
> cannot use it in another parition if you are slicing the disk.
> 
> Was there a questions somewhere in here? What do you want to do? It
> sounds like you need to put a filesystem on the first slice. If you
> had data on it you wanted to get at... Might be time to go to your
> backups.
> 



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