Bug#463081: grub2: Machine reboots after 'Welcome to GRUB!' message

[Robert Millan]

On Tue, Jan 29, 2008 at 02:47:33PM +0000, Peter Hicks wrote:
> > Also, try running cat on that file from grub-emu too.
> 
> Works fine.
> 
> I've found that 'insmod gfxterm', 'insmod vbe' and 'terminal gfxterm' result
> in a corrupt screen with grey blocks instead of text when I comment out the
> 'font' line, but when I add the 'font' line back in, I have the reboot
> occuring immediately.  Replacing 'unicode' with 'ascii' causes the crash too.
> 
> I copied unicode.pff off to /boot/grub and changed grub.conf, and... it
> worked.
> 
> So it seems the bug is to do with reading from an xfs partition.

Can you reproduce it with:

  apt-get install grub-rescue-pc qemu
  dd if=/dev/sda5 of=/tmp/img
  qemu -boot a -fda /usr/lib/grub-rescue/grub-rescue-floppy.img -hda /tmp/img

and trying to setup gfxterm manually? (by loading the font from (hd0)/share/...)

-- 
Robert Millan

<GPLv2> I know my rights; I want my phone call!
<DRM> What use is a phone call… if you are unable to speak?
(as seen on /.)