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Date:      Tue, 10 Feb 1998 02:19:17 -0800
From:      Mike Smith <mike@smith.net.au>
To:        Zach Heilig <zach@gaffaneys.com>
Cc:        Mike Smith <mike@smith.net.au>, hackers@FreeBSD.ORG
Subject:   Re: Bootblock sizes (was bad144 ravings) 
Message-ID:  <199802101019.CAA01018@dingo.cdrom.com>
In-Reply-To: Your message of "Tue, 10 Feb 1998 04:09:57 CST." <19980210040957.27917@gaffaneys.com> 

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> On Sat, Feb 07, 1998 at 02:54:53PM -0800, Mike Smith wrote:
> > The issue at hand here is the size of the 'boot2' file, which may not 
> > exceed 14 sectors @ 512B each (in order to fit on a 15spt disk), or 
> > 7168 bytes.
> 
> Doesn't FreeBSD require a 1.44MB disk to install from? That would give
> us 18spt, or 9216 bytes.  That should give enough room for bad144 as
> well as the recent enhancements.  Unless there are some harddisks that
> have less than 18spt.  Looking through /etc/disktab, I see:
> 
> pan60|Panasonic Laptop's 60MB IDE:\
>         :dt=ST506:ty=winchester:se#512:nt#13:ns#17:nc#565:\
>                                                 ^^
> So maybe 17 should be the upper limit.

That won't let the bootblocks hide inside the label space in a 
filesystem on a dedicated disk.  We've been through this already; I'm 
sorry for giving the wrong justification in my previous message.

-- 
\\  Sometimes you're ahead,       \\  Mike Smith
\\  sometimes you're behind.      \\  mike@smith.net.au
\\  The race is long, and in the  \\  msmith@freebsd.org
\\  end it's only with yourself.  \\  msmith@cdrom.com



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