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Date:      Tue, 30 Dec 2003 02:11:26 +1030
From:      Malcolm Kay <malcolm.kay@internode.on.net>
To:        "Francisco Reyes" <francisco@natserv.com>, "FreeBSD questions" <questions@freebsd.org>
Subject:   Re: Fwd: Re: Please help.  Can't see HD
Message-ID:  <200312300211.26168.malcolm.kay@internode.on.net>
In-Reply-To: <200312291438.hBTEchU6012231@mail1.acecape.com>
References:  <200312291438.hBTEchU6012231@mail1.acecape.com>

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On Tue, 30 Dec 2003 01:12, Francisco Reyes wrote:
> On Mon, 29 Dec 2003 20:53:06 +1030, Malcolm Kay wrote:
> >OK; how did you install initially? Was the whole disk used for BSD?
> >Did you follow the defaults during installation?
> >
> >If both the latter questions are answered in the affirmative then you
> >might go back to installation and try to create the same slices,
> > partitions and mount points.
>
> I thought I had recorded my partition sizes, but I had not saved
> them.
> I found enough data in my backups so the data loss is minimal.
> At this stage I want to concentrate on improving my backups for
> the next time.
>
> >> Is there a way to backup the disklable and slice info?
> >
> >Yes, disklabel and fdisk  have facilities for outputting their current
> > state and this can be redirected to file and then stored on your back=
up
> > media or a floppy disk.
> >
> >I do this on a regular basis
>
> Could you share the commands please?
>

# fdisk ad2 > ad2.fdisk
# disklabel ad2s1 > ad2s1.disklabel

> >In my opinion dump and restore are the best backup and recovery mechan=
isms
> >for BSD.
>
> I will work on a dump/restore mechanism. I will do that weekly.
> Have a database running which may not backup well. On weekends I
> can shutdown everything for the dump process. I plan to dump to
> a file in the second HD if that is possible. I also just bought
> a DVD burner to backup to it essential data to take offsite
> besides the copy on the second HD.
>
> Thanks for the advice. If I had only had a backup of the disk
> info this whole experience would have been less problematic.

If you have dumps of all partitions then the slicing and partitioning siz=
es
are not too important so long as thay are big enough.
Just use say 'fdisk -BI ad2' to set it up with one slice for BSD.

Then use disklabel on ad2s1 first to obtain a skeleton file then fill in
the partitions and sizes you want and write it back with
# disklabel -R -B ad2s1 prototypelabel

Now create file systems in the partitions to be mounted (newfs).

You should now be able to restore your backups to each partition in turn.

Malcolm Kay




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