From: Phillip Susi <psusi@cfl.rr.com>
To: The development of GNU GRUB <grub-devel@gnu.org>
Cc: Colin Watson <cjwatson@ubuntu.com>,
Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Subject: Re: [RFT] Reed-Solomon
Date: Tue, 28 Sep 2010 11:13:40 -0400 [thread overview]
Message-ID: <4CA20624.70904@cfl.rr.com> (raw)
In-Reply-To: <20100927233431.GO8579@caffeine.csclub.uwaterloo.ca>
On 9/27/2010 7:34 PM, Lennart Sorensen wrote:
> FlexNet and similar like to write to track 0 sectors (outside partitioned
> space) to store license info. This clobbers part of grub potentially.
> So to make grub more tolerant of such misbehaviour, the idea suggested
> was to add error correction to grub so it can survive attacks on its code
> (and even potential disk errors).
Ahh, neat. Two sectors of ECC can fix one that is completely destroyed?
I was under the impression that you could only fix a few corrupted
bits, not an entire sector, but I suppose if you add enough ECC... I
take it that someone has already made sure that the misbehaved software
only uses a single sector?
next prev parent reply other threads:[~2010-09-28 15:14 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-25 20:25 [RFT] Reed-Solomon Vladimir 'φ-coder/phcoder' Serbinenko
2010-09-27 15:10 ` Phillip Susi
2010-09-27 16:12 ` Colin Watson
2010-09-27 21:10 ` Phillip Susi
2010-09-27 23:34 ` Lennart Sorensen
2010-09-28 15:13 ` Phillip Susi [this message]
2010-09-28 15:26 ` Colin Watson
2010-09-28 16:36 ` Vladimir 'φ-coder/phcoder' Serbinenko
2010-09-28 18:45 ` Phillip Susi
2010-09-28 18:54 ` Vladimir 'φ-coder/phcoder' Serbinenko
2010-09-27 23:47 ` Manoel Rebelo Abraches
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