Re: Creating an M7i boot PCMCIA card

Ras,

no, install-media is a seperate file which can be
downloaded/obtained
from juniper. Its a dump of what is on the pcmcia card you
get when you
buy a box and thus can be rewritten on the pcmciacard to
e.g. update it.


> dd if=/dev/zero of=/dev/rad3 count=20
> Can anyone explain the sense of that?

Doesnt really make sense, but i guess its used to somewhat
clear the
bootsector? Shouldnt be neccessary since its beeing
rewritten anyway by
the command afterwards which writes the dump to the card
incl.
bootsector.

Regards,
Jonas


On Sat, 2007-03-31 at 19:54, Jee Kay wrote:
> On 30/03/07, Lucio Fraile (CL/CEC) <lucio.fraileericsson.com> wrote:
> >         rootrouter1% dd
if=install-media-7.4R1.7-domestic of=/dev/rad3
> 
> I keep seeing references to this 'install-media' - is
this the same as
> the jinstall package? Some documentation seems to imply
that it is and
> other that it is a distinct package.
> 
> Thanks,
> Ras
> _______________________________________________
> juniper-nsp mailing list juniper-nsppuck.nether.net
> 
https://puck.nether.net/mailman/listinfo/juniper-nsp


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> > dd if=/dev/zero of=/dev/rad3 count=20
> > Can anyone explain the sense of that?
> 
> Doesnt really make sense, but i guess its used to
somewhat clear the
> bootsector? Shouldnt be neccessary since its beeing
rewritten 
> anyway by
> the command afterwards which writes the dump to the
card incl.
> bootsector.

It's quite typical in the Free/Net/OpenBSD world!  

It clears the boot sector and DOS partition map so that the
Unix map will be found and processed correctly.

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On Sat, Mar 31, 2007 at 11:39:34AM -0700, Paul Goyette
wrote:
> It clears the boot sector and DOS partition map so that
the
> Unix map will be found and processed correctly.

But that's done by dd'ing the image to the flash anyway?!


Best regards,
Daniel

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Yup, that's the point of "direct disk" which, if
I'm not mistaken, is what
"dd" stands for.

Sector-level copying, so you don't have to worry about
exciting things like
partition tables and fun stuff like that.

Scott
 

-----Original Message-----
From: juniper-nsp-bouncespuck.nether.net
[mailto:juniper-nsp-bouncespuck.nether.net] On Behalf
Of Daniel Roesen
Sent: Saturday, March 31, 2007 5:13 PM
To: juniper-nsppuck.nether.net
Subject: Re: [j-nsp] Creating an M7i boot PCMCIA card

On Sat, Mar 31, 2007 at 11:39:34AM -0700, Paul Goyette
wrote:
> It clears the boot sector and DOS partition map so that
the Unix map 
> will be found and processed correctly.

But that's done by dd'ing the image to the flash anyway?!


Best regards,
Daniel

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