[Xen-bugs] [Bug 464] Xen Demo Live CD 3.0 halts at "grub>" prompt

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http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=464





------- Additional Comments From gnutered@xxxxxxxxxxxx  2006-01-20 03:18 -------
(In reply to comment #5)

Damn!  I did a reply to this, and I thought it had gone through.

> Does the CD drive work when booted to any other installation (Linux, *BSD,
> Windows, etc.)?

Yes, it works fine in the Ubuntu distro on the hard drive.
 
> Were the 'cat /<tab>' and 'find' commands run from GRUB or from a Linux boot? 
>  
> Both exist as both GRUB and standard shell commands.

Yes, from GRUB.  The "grinding" I mentioned last time was actually the floppy
drive.  The find doesn't "hang" either - it just takes time to finish.

> If you have a comperable drive available, have you tried swapping it and 
> booting
> the test CD?

No, no spare hardware.

> If you can rule out misbehaving hardware it would help.  I'm
> seeing the following which suggest a drive problem:

I've got no explanation for this, but the CD-ROM drive is working fine (below)

> Try an
> alternate burn of the CD as well.

I didn't do this, as I know the CD works in other machines, and I saw the same
result with both the 2.0.6 and 3.0.0 Live CDs.  Plus these CDs work in the
laptop when booted into Ubuntu (below)

> You should be able to confirm drive errors by doing long reads (dd if=/dev/hdc
> of=/dev/null) with a known good CD in the drive and watching either dmesg 
> output
> (run repeatedly) or /var/log/messages in most distros.

Yup, did this, on both the raw image (/dev/hdc) and by doing a find on the
mounted CD and dd'ing all the files to /dev/null.

For giggles, under Ubuntu, I fired the CD up under QEMU.  Apart from running
like a dog, it worked, through to the gdm login.

So I'm pretty happy that the CD-ROM media and drive are function OK together

> You may also be able to
> check for drive errors using smartmontools (see: 
> http://smartmontools.sourceforge.net/ )

CD-ROM is not S.M.A.R.T. enabled, so the tool says.

> Otherwise, we don't have comperable HW to repro this on.  If you can't get 
> this
> to work and there's no additional debug info I'll close this in a week or so.

That would be a shame.  I got the CD working on a desktop machine, and am thusly
hooked on Xen.  It would be a good thing, if this is a fault for others too, to
get it fixed.

I have started to make enquiries on the grub-devel list to see if they can help
debug this.

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