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Date:      Tue, 22 Jan 2013 12:24:59 +0100 (CET)
From:      =?ISO-8859-1?Q?Trond_Endrest=F8l?= <Trond.Endrestol@fagskolen.gjovik.no>
To:        Daniel Braniss <danny@cs.huji.ac.il>
Cc:        FreeBSD Hackers <freebsd-hackers@freebsd.org>
Subject:   Re: pmbr: Boot loader too large
Message-ID:  <alpine.BSF.2.00.1301221223440.41917@mail.fig.ol.no>
In-Reply-To: <E1Txbuq-0007Zr-MY@kabab.cs.huji.ac.il>
References:  <E1Txbuq-0007Zr-MY@kabab.cs.huji.ac.il>

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On Tue, 22 Jan 2013 13:21+0200, Daniel Braniss wrote:

> hi,
> this is the output from gpart show:
> =>       34  976773101  ada0  GPT  (465G)
>          34       2048     1  freebsd-boot  (1.0M)
>        2082    4194304     2  freebsd-ufs  [bootme]  (2.0G)
>     4196386   12582912     3  freebsd-swap  (6.0G)
>    16779298  959993837     4  freebsd-zfs  (457G)
> 
> =>       34  976773101  ada1  GPT  (465G)
>          34       2048     1  freebsd-boot  (1.0M)
>        2082    4194304     2  freebsd-ufs  (2.0G)
>     4196386   12582912     3  freebsd-swap  (6.0G)
>    16779298  959993837     4  freebsd-zfs  (457G)
> 
> I also did:
> 	gpart bootcode -b /boot/pmbr ada0
> 
> I'm trying to boot and get
>   Boot loader too large
> 
> not matter if I boot from disk or pxe.
> The pmbr is 512 bytes, so what causes it to overshoot? 
> I don't know x86 assembler (nor want to :-), but the comment says: 
> 	545k should be enough
> so what's going on?
> thanks,
> 	danny

A freebsd-boot partition must never be larger than 128K, i.e. 65536 
512B blocks.

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