[j-nsp] Backup u-boot image on SRX210?

[Michael Loftis]

--------------------

Sent from my Motorola Xoom
On Oct 4, 2012 11:42 AM, "Elle Plato" <techgrrl at gmail.com> wrote:
>
> On Thu, Oct 4, 2012 at 11:25 AM, prd::S <prd.stee at gmail.com> wrote:
> > Hi, All.
> >
> > A power outage occured when I was flashing the u-boot image on an
> > SRX210 via tftp.
> > Then there's no output on the serial console even after several resets.
> > I suspect that the primary u-boot image might be corrupted.
> >
> > The questions are:
> > Does SRX210 has a backup u-boot image?
> > If so, how to boot from that image?
> >
>
> SRX-210 devices should be configured for dual boot partition by
> default.  When you login after the primary
> is corrupted the login banner should warn you that the device booted
> from the alternate image,
> something like:  WARNING: THIS DEVICE HAS BOOTED FROM THE BACKUP JUNOS
IMAGE
> and "show system alarms" should provide an alarm indicating the same
thing.
>

UBoot is the BIOS more or less. None of this helps him since it effectively
doesn't have a working BIOS to get that far.

I would ping JTAC - pretty sure the unit has a backup uboot image it can
fall back to but not having one I have no idea how to get at it myself.
Usually there's a jumper or a button one can hit to get the CPU to address
an alternate startup location.