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Date:      Sun, 13 May 2007 19:43:14 +0200
From:      David Landgren <david@landgren.net>
To:        Sam Lawrance <boris@brooknet.com.au>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: Skipping "F1 FreeBSD" prompt on boot
Message-ID:  <46474E32.5060009@landgren.net>
In-Reply-To: <9979A1FD-F329-4C64-B5D2-66399F731E87@brooknet.com.au>
References:  <46458C63.8040600@landgren.net> <46459E20.5060108@infracaninophile.co.uk> <86C5378E-69FE-4A9F-9C77-C7970E42481F@brooknet.com.au> <4646C922.7040902@infracaninophile.co.uk> <9979A1FD-F329-4C64-B5D2-66399F731E87@brooknet.com.au>

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Sam Lawrance wrote:
> 
> On 13/05/2007, at 6:15 PM, Matthew Seaman wrote:
> 
>> -----BEGIN PGP SIGNED MESSAGE-----
>> Hash: SHA256
>>
>> Sam Lawrance wrote:
>>>
>>> On 12/05/2007, at 8:59 PM, Matthew Seaman wrote:
>>>
>>>> -----BEGIN PGP SIGNED MESSAGE-----
>>>> Hash: SHA256
>>>>
>>>> David Landgren wrote:
>>>>
>>>>> I have a disk that has only FreeBSD on it, and so I would like to skip
>>>>> the initial F1/FreeBSD prompt. boot0cfg -v ad0 says:
>>>>>
>>>>> options=nopacket,update,nosetdrv
>>>>> default_selection=F1 (Slice 1)
>>>>>
>>>>> ... what do I have to do to say JFDI instead of prompting? This is not
>>>>> the sort of thing I want to fiddle around experimenting, so a little
>>>>> guidance would be most appreciated.
>>>>
>>>> fdisk -B -b /boot/mbr /dev/ad0
>>>>
>>>> You installed the FreeBSD boot sector stuff, which gives you the 'press
>>>> F1'  business.  Replace that with the standard mbr, which just boots
>>>> straight up.
>>>>
>>>
>>> Rather than replacing it, you can use boot0cfg to set a really short
>>> timeout instead; in case you might want that functionality one day.
>>
>> Heh.  It's not like you only get one chance to rewrite the boot blocks
>> on any particular drive.  If anyone needs to (re-)install the FreeBSD 
>> boot
>> blocks, then you can do very simply it by:
>>
>>    boot0cfg -B -b /boot/boot0 /dev/ad0
>>
>> or even
>>
>>    fdisk -B -b /boot/boot0 /dev/ad0
>>
>> Or if you need to boot from a serial console you can change /boot/boot0
>> to /boot/boot0sio
> 
> Sure, but why get rid of it, when leaving it in with a short timeout 
> costs you nothing.

A fair point, but in this particular case, FreeBSD is the only thing on 
the drive, and likely to remain that way until the disk dies of 
mechanical failure. I just don't need that prompt, especially the 
annoying beep it makes.

David




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