New SoaS [XO-1] build soas70

[Yioryos Asprobounitis]

--- On Wed, 9/30/09, Martin Dengler <martin at martindengler.com> wrote:

> From: Martin Dengler <martin at martindengler.com>
> Subject: Re: New SoaS [XO-1] build soas70
> To: "Yioryos Asprobounitis" <mavrothal at yahoo.com>
> Cc: fedora-olpc-list at redhat.com
> Date: Wednesday, September 30, 2009, 3:59 PM
> Yioryos,
> 
> On Wed, Sep 30, 2009 at 12:06:11PM -0700, Yioryos
> Asprobounitis wrote:
> 

> > The included olpc.fth in the vergin stick _does_ point
> to initrd.img
> > and the OFW complains that can not open the boot
> devise and stops
> > there. (more below)
> 
> Careful, some people are going to take your words literally
> :).  It
> clearly doesn't stop there (you had me worried) from what
> you said
> below.

With the original olpc.fth it _does_ stop there. Never get to console.

> 
> > > Then it'd be good to observe what happens. Do you
> see the green
> > > and blue "sugarlabs" logo when the kernel
> messages appear?
> >
> > I made a new olpc.fth file with just these 4 lines
> after a "\ boot script" line on the top.
> > It does go through the kernel loading with the SL logo
> on the top and then freezes at: Waiting for root devise
> LABEL=OLPCRoot...
> 
> Ok, thanks this is useful - I wonder what's wrong with the
> label-based
> root device detection.
> 
> > Changing to 
> > " ro root=/dev/dsa1 rootwait" to boot-file 
> > in case their is label conflict with the NAND which
> has F11-XO1/os7,
> > results in a freeze at: Waiting for root devise
> /dev/dsa1
> 
> It's not /dev/dsa1 but /dev/sda1 .  Or is that just a
> double typo in
> your email?

one typo one copy/paste :-)

> 
> > Just to verify that the the stick shows up as
> "OLPCRoot" on any
> > Linux OS including Sugar and it is /dev/sda1 when
> booting the XO
> > from the NAND or an SD card.
> 
> I wonder if the USB device is detected as something
> else...if you boot
> from the NAND and plug in the USB device with the soas71xo
> filesystem
> on it, what device node (e.g., /dev/sda1) does its
> partition show up
> as?

as mentioned above, as: OLPCRoot

> 
> We really should be using the same
> root-device-specification as
> livecd-iso-to-disk uses, which would be pretty
> unambiguous.  I'll
> look into that.
> 
> > It is ext2 formatted and I did erase the stick just
> before 'cating'
> > the soas71xo file into it.
> 
> Ok, though you don't need to erase the stick first -
> "cat'ing" the
> file includes a partition table and filesystem superblocks,
> so
> whatever bits are left on the device aren't going to be
> known as files
> or anything afterwards.

Yeh, but just in case. USB sticks can be very "funny" at times.

> 
> > So certainly will not boot with just the kernel in
> this setting.
> 
> Yeah - though precisely one should say that the kernel _is_
> booting,
> it's just not finding the root device.
> 
> Martin
>