Bug#550632: grub-pc: chainload from legacy fails with bios disk error

[Lionel Elie Mamane]

Package: grub-pc
Version: 1.97~beta4-1
Severity: grave
Justification: renders package unusable

When selecting the "Chainload into GRUB 2" menu entry in the
grub-legacy still in the MBR, I get these error messages:

error: bios disk read error
Entering reascue mode...
error: cannot get C/H/S values

And then I get a prompt that does not understand "help" so I'm
guideless.

-- Package-specific info:

*********************** BEGIN /proc/mounts
/dev/mapper/diskvg-rootlv / xfs rw,relatime,noquota 0 0
/dev/md0 /boot ext2 rw,sync,nosuid,nodev,noexec,relatime,errors=continue 0 0
/dev/mapper/diskvg-rootlv /var/chroots/sid-i386/home xfs rw,relatime,noquota 0 0
/dev/mapper/diskvg-rootlv /var/chroots/sid-i386/tmp xfs rw,relatime,noquota 0 0
/dev/mapper/diskvg-rootlv /var/chroots/sid-i386/media xfs rw,relatime,noquota 0 0
*********************** END /proc/mounts

*********************** BEGIN /boot/grub/device.map
(hd0)	/dev/sda
(hd1)	/dev/sdb
(hd2)	/dev/sdc
*********************** END /boot/grub/device.map

*********************** BEGIN /boot/grub/grub.cfg
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by /usr/sbin/grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/00_header ###
set default=0
insmod raid
insmod raid5rec
insmod mdraid
insmod lvm
insmod xfs
set root=(diskvg-rootlv)
search --no-floppy --fs-uuid --set af9ee105-4b60-4c36-865f-619c98222a41
if loadfont /usr/share/grub/unicode.pf2 ; then
  set gfxmode=640x480
  insmod gfxterm
  insmod vbe
  if terminal_output gfxterm ; then true ; else
    # For backward compatibility with versions of terminal.mod that don't
    # understand terminal_output
    terminal gfxterm
  fi
fi
set timeout=5
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/05_debian_theme ###
insmod raid
insmod mdraid
insmod ext2
set root=(md0)
search --no-floppy --fs-uuid --set 9f92bc65-061b-4c02-9c05-a60bf66ba5e4
insmod png
if background_image /grub/moreblue-orbit-grub.png ; then
  set color_normal=black/black
  set color_highlight=magenta/black
else
  set menu_color_normal=cyan/blue
  set menu_color_highlight=white/blue
fi
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
menuentry "Debian GNU/Linux, Linux 2.6.30-2-amd64" {
	insmod raid
	insmod mdraid
	insmod ext2
	set root=(md0)
	search --no-floppy --fs-uuid --set 9f92bc65-061b-4c02-9c05-a60bf66ba5e4
	linux	/vmlinuz-2.6.30-2-amd64 root=/dev/mapper/diskvg-rootlv ro console=tty0 rootdelay=5 quiet
	initrd	/initrd.img-2.6.30-2-amd64
}
menuentry "Debian GNU/Linux, Linux 2.6.30-2-amd64 (recovery mode)" {
	insmod raid
	insmod mdraid
	insmod ext2
	set root=(md0)
	search --no-floppy --fs-uuid --set 9f92bc65-061b-4c02-9c05-a60bf66ba5e4
	linux	/vmlinuz-2.6.30-2-amd64 root=/dev/mapper/diskvg-rootlv ro single console=tty0 rootdelay=5
	initrd	/initrd.img-2.6.30-2-amd64
}
menuentry "Debian GNU/Linux, Linux 2.6.29-2-amd64" {
	insmod raid
	insmod mdraid
	insmod ext2
	set root=(md0)
	search --no-floppy --fs-uuid --set 9f92bc65-061b-4c02-9c05-a60bf66ba5e4
	linux	/vmlinuz-2.6.29-2-amd64 root=/dev/mapper/diskvg-rootlv ro console=tty0 rootdelay=5 quiet
	initrd	/initrd.img-2.6.29-2-amd64
}
menuentry "Debian GNU/Linux, Linux 2.6.29-2-amd64 (recovery mode)" {
	insmod raid
	insmod mdraid
	insmod ext2
	set root=(md0)
	search --no-floppy --fs-uuid --set 9f92bc65-061b-4c02-9c05-a60bf66ba5e4
	linux	/vmlinuz-2.6.29-2-amd64 root=/dev/mapper/diskvg-rootlv ro single console=tty0 rootdelay=5
	initrd	/initrd.img-2.6.29-2-amd64
}
### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+)" {
	insmod raid
	insmod mdraid
	insmod ext2
	set root=(md0)
	search --no-floppy --fs-uuid --set 9f92bc65-061b-4c02-9c05-a60bf66ba5e4
	linux16	/memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
	insmod raid
	insmod mdraid
	insmod ext2
	set root=(md0)
	search --no-floppy --fs-uuid --set 9f92bc65-061b-4c02-9c05-a60bf66ba5e4
	linux16	/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###

### BEGIN /etc/grub.d/30_os-prober ###
### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###
*********************** END /boot/grub/grub.cfg

-- System Information:
Debian Release: squeeze/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.30-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=fr_LU.UTF-8, LC_CTYPE=fr_LU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages grub-pc depends on:
ii  debconf [debconf-2.0]       1.5.27       Debian configuration management sy
ii  grub-common                 1.97~beta4-1 GRand Unified Bootloader, version 
ii  libc6                       2.9-27       GNU C Library: Shared libraries
ii  ucf                         3.0022       Update Configuration File: preserv

grub-pc recommends no packages.

Versions of packages grub-pc suggests:
ii  desktop-base                  5.0.5      common files for the Debian Deskto
ii  genisoimage                   9:1.1.9-1  Creates ISO-9660 CD-ROM filesystem

-- debconf information:
  grub2/kfreebsd_cmdline:
* grub2/linux_cmdline: console=tty0 rootdelay=5
* grub-pc/chainload_from_menu.lst: true
  grub-pc/kopt_extracted: true
  grub-pc/postrm_purge_boot_grub: false
  grub2/kfreebsd_cmdline_default: quiet
* grub2/linux_cmdline_default: quiet
  grub-pc/install_devices: