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From: Volker Armin Hemmann <volkerarmin@googlemail.com>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] root partition lost - backup too old - please help
Date: Mon, 14 Jun 2010 21:19:54 +0200
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On Montag 14 Juni 2010, Helmut Jarausch wrote:
> On 14 Jun, Volker Armin Hemmann wrote:
> > On Montag 14 Juni 2010, Helmut Jarausch wrote:
> >> Hi,
> >> 
> >> due to a disk crash I've lost my root partition.
> >> Unfortunately, the backup version is 4 weeks old.
> >> But my /usr partition is up-to-date and I have
> >> binary build-pkgs.
> >> What's the fastest way to restore the portage-relevant
> >> data on the root partition?
> >> 
> >> Many thanks for a hint,
> >> Helmut.
> > 
> > if /var/db survived, you can grep for /bin /lib /sbin etc in /var/db and
> > install the packages hit.
> 
> Thanks, but unfortunately /var was on the root partition.
> 
> So, I have to  emerge -k --update @world @system .
> 
> Helmut.

except that without /var portage does now know what @system or @world is made 
off.