From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@9fans.net
Subject: Re: [9fans] BUG: disk/fdisk.c: corrupts MBR
Date: Sat, 7 Jan 2012 14:30:52 -0500 [thread overview]
Message-ID: <00ef086e68547f47c3dce5d366aa94bb@chula.quanstro.net> (raw)
In-Reply-To: <20120107192213.GA4971@polynum.com>
> > can you just set sec2cyl=1?
>
> This wouls probably do the trick. But the code is clean and setting just
> this is not---to my taste.
>
> The ideal would be to simply patch the existing with changed values (no
> need to be efficient for 4 * 16 bytes), and leave clearly alone values
> set by others.
>
> And to verify the magic signature for, at least, the active partition
> (it would have spot the problem).
the code assumes c/h/s. and if it (libdisk) can't find the geometry, it makes stuff
up. that seems like a dubious assumption. not very clean at all.
i was thinking that setting cyc2cyl=1 should cleanly remove this feature.
it could then be reenabled with a command-line flag if necessary for
some really ancient h/w.
- erik
next prev parent reply other threads:[~2012-01-07 19:30 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-07 18:29 tlaronde
2012-01-07 19:04 ` erik quanstrom
2012-01-07 19:22 ` tlaronde
2012-01-07 19:30 ` erik quanstrom [this message]
2012-01-07 20:13 ` tlaronde
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