Date: Fri, 12 Apr 2002 09:04:52 +0200 From: "Patrick O'Reilly" <bsd@perimeter.co.za> To: "Peter Leftwich" <Hostmaster@Video2Video.Com> Cc: "Mike Meyer" <mwm-dated-1018566993.77f10e@mired.org>, "mpd" <mpd6334@cs.rit.edu>, "FreeBSD Questions" <FreeBSD-Questions@FreeBSD.Org> Subject: Re: MBR, mfsroot.flp, handbook, and list fail me, partially... Message-ID: <008e01c1e1f0$5a7014e0$b50d030a@PATRICK> References: <20020411200205.B76458-100000@earl-grey.cloud9.net>
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----- Original Message -----
From: "Peter Leftwich" <Hostmaster@Video2Video.Com>
> Can a command similar to 'boot0cfg -B ad0' be issued effectively while
> logged in regularly to the box, as root, or must I boot to a floppy?
I have done so (run these commands while in normal multi-user mode)
without ill effect. But, I had the luxury of doing it on a PC where
no-one else was busy. Anyway, I got the feeling that it was safe
because there were no warnings to the contrary :) I seem to recall that
the man page indicated that the -B option would replace the boot manager
code (the boot program), but it does not touch the existing partition
tables, etc. Do, it *should* be safe.
> Is there any risk of munging an entire system when tossing around
fdisk and
> bootcfg commands? Do I have to "relabel" slices as bootable in
> /stand/sysinstall or just use `fdisk -B [device containing Fbsd OS
here]` ?
Well, if there is risk, it did not bite me :) No harm in being cautious
though. Mike might have a more authoritative answer here. I did not
need to make any changes to the slices/labels/etc. It would appear that
the boot code is smart enough to see all the slices, and present them in
the boot menu automatically. I guess if you are "demoting" to autoboot,
and there is more than one partition available, then you might want to
first make sure the one you want to autoboot is marked as "active" ?!?
> He-he, I remember good ol' PEBKAC, haven't seen PEBKAC since May 1995!
:)
You havn't seen me !
> Thanks for continued assistance, hugely desired...
Hey - I've had so much assistance from this community, I try to give
back if I can.
Regards,
Patrick O'Reilly.
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