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Re: Bootable USB images



On Sun, Jan 03, 2010 at 03:58:07AM +0100, Aurelien Jarno wrote:
> On Sun, Jan 03, 2010 at 03:31:24AM +0100, Aurelien Jarno wrote:
> > On Fri, Jan 01, 2010 at 02:30:20AM +0100, Robert Millan wrote:
> > > On Thu, Dec 31, 2009 at 02:52:25PM +0000, Thorsten Glaser wrote:
> > > > Is there something you special-cased when handling CDs or not-CDs? (For
> > > > example, grub-legacy doesn’t handle iso9660 from media with !2048by
> > > > sectors at all.)
> > > 
> > > There is, but I don't think it has any relation to this problem.  iso9660
> > > filesystems in non-CD are known-stable code.  Only the boot mechanism is new.
> > > 
> > > In fact, I have some ideas on what could be causing this, but unless I can
> > > reproduce it, I'm wary of sending shots in the dark.  And despite all my
> > > efforts I've been unable to reproduce it:
> > > 
> > >   - I grabbed Aurelien's mini.iso and extracted its files.
> > >   - I used the same version of grub-pc and grub-common as Aurelien
> > >     (1.98~20091229-1) to generate a new image.
> > >   - I did this on kfreebsd-i386 (I specifically installed the i386
> > >     flavour to test this).
> > > 
> > > I also tried today's Bazaar trunk and kfreebsd-amd64 before that.  It _always_
> > > works for me.
> > > 
> > > Except when I use the mini.iso directly, of course, but that's not very
> > > useful...
> > > 
> > > Aurelien, could you try building the image in another environment?  E.g.
> > > kfreebsd-amd64 and/or using a newer grub-pc.
> > > 
> > 
> > I upgraded both my kfreebsd-i386 and kfreebsd-amd64 machines to 
> > 1.98~20090101-1. It still fails on kfreebsd-i386, but works on
> > kfreebsd-amd64. I haven't investigated why though.
> 
> It is due to (the size?) of /boot/mfsroot.gz. Using the one from
> kfreebsd-amd64 on kfreebsd-i386 makes it working, though it later fails
> when trying to run /sbin/init.

I was hoping I'd be able to reproduce this, but I can't find a way to.  Given
the situation, I think I'll start sending shots in the dark and see if that
catches something.

I'll be back to you soon.

-- 
Robert Millan

  "Be the change you want to see in the world" -- Gandhi


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