Quoting Yedidyah Bar-David, from the post of Sun, 03 Dec:
> On Sun, Dec 03, 2006 at 10:39:01AM +0200, Ira Abramov wrote:
> > I'm booting a PXE image on a node that I want to back up with partimage.
> > I have to detect the disk it uses for it's root. right now I'm guessing
> > it with the result of this:
> >
> > sfdisk -d /dev/sd? /dev/hd? /dev/cciss/???? 2>/dev/null | awk 'NR==1 {print
> > $(NF)}'
> >
> > is there a more correct or exact way to deduce this by asking the kernel
> > what it would boot if PXE was not active?
>
> "the kernel" or the BIOS? Please be more specific about what exactly
rephrase... is there a way of asking the kernel what THE BIOS would
boot. I typed slower than my brain, of course :-)
> I am not sure there is a portable, documented way to do this.
crap. right now the sfdisk line above looks at common disk device names,
and the first one it finds that has a physican device behind it, gets
reported.
I guess it will do for now.
--
True.
Ira Abramov
http://ira.abramov.org/email/
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