Bug#565706: grub2 enters rescue mode with "fd0 cannot get C/H/S values"
Vladimir 'φ-coder/phcoder' Serbinenko
phcoder at gmail.com
Wed Feb 24 09:58:05 UTC 2010
Tom Wright wrote:
> Package: grub-pc
> Version: 1.98~20100128-1.2
> Severity: normal
>
> I am seeing the same problem: grub reports this on startup and then gets no further:
>
> error: fd0 cannot get C/H/S values.
> entering rescue mode
>
>
Can you try the attached patch?
> My system has three RAID1 md partitions across sda and sdb, containing swap, / and /boot and it has another disk (sdc). With these plugged in, it all works fine, but once I plug a USB drive in as well, the system won't start. I can get it to start by removing the USB drive and resetting it (ctrl-alt-del or power-cycle). This is not ideal though, as it's a hidden-away server which always has a USB disk plugged into it for backup purposes, so I cannot reboot it remotely because it won't start up again.
>
> -- Package-specific info:
>
> *********************** BEGIN /proc/mounts
> /dev/disk/by-uuid/b8ea7ba8-1e96-4e1c-8993-6a3118767dd5 / ext4 rw,relatime,errors=remount-ro,barrier=1,data=ordered 0 0
> /dev/md2 /boot ext3 rw,relatime,errors=continue,data=ordered 0 0
> /dev/sdc1 /mythrecordings ext4 rw,relatime,barrier=1,data=ordered 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 ###
> if [ -s $prefix/grubenv ]; then
> load_env
> fi
> set default="0"
> if [ ${prev_saved_entry} ]; then
> set saved_entry=${prev_saved_entry}
> save_env saved_entry
> set prev_saved_entry=
> save_env prev_saved_entry
> set boot_once=true
> fi
>
> function savedefault {
> if [ -z ${boot_once} ]; then
> saved_entry=${chosen}
> save_env saved_entry
> fi
> }
> insmod raid
> insmod mdraid
> insmod ext2
> set root=(md1)
> search --no-floppy --fs-uuid --set b8ea7ba8-1e96-4e1c-8993-6a3118767dd5
> 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
> insmod raid
> insmod mdraid
> insmod ext2
> set root=(md2)
> search --no-floppy --fs-uuid --set 7585406e-ce84-4bd5-afb6-e198efa46a94
> set locale_dir=($root)/grub/locale
> set lang=en
> insmod gettext
> set timeout=5
> ### END /etc/grub.d/00_header ###
>
> ### BEGIN /etc/grub.d/05_debian_theme ###
> set menu_color_normal=cyan/blue
> set menu_color_highlight=white/blue
> ### END /etc/grub.d/05_debian_theme ###
>
> ### BEGIN /etc/grub.d/10_linux ###
> menuentry "Debian GNU/Linux, with Linux 2.6.32-trunk-amd64" {
> insmod raid
> insmod mdraid
> insmod ext2
> set root=(md2)
> search --no-floppy --fs-uuid --set 7585406e-ce84-4bd5-afb6-e198efa46a94
> echo Loading Linux 2.6.32-trunk-amd64 ...
> linux /vmlinuz-2.6.32-trunk-amd64 root=UUID=b8ea7ba8-1e96-4e1c-8993-6a3118767dd5 ro quiet
> echo Loading initial ramdisk ...
> initrd /initrd.img-2.6.32-trunk-amd64
> }
> menuentry "Debian GNU/Linux, with Linux 2.6.32-trunk-amd64 (recovery mode)" {
> insmod raid
> insmod mdraid
> insmod ext2
> set root=(md2)
> search --no-floppy --fs-uuid --set 7585406e-ce84-4bd5-afb6-e198efa46a94
> echo Loading Linux 2.6.32-trunk-amd64 ...
> linux /vmlinuz-2.6.32-trunk-amd64 root=UUID=b8ea7ba8-1e96-4e1c-8993-6a3118767dd5 ro single
> echo Loading initial ramdisk ...
> initrd /initrd.img-2.6.32-trunk-amd64
> }
> ### END /etc/grub.d/10_linux ###
>
> ### 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 testing
> APT policy: (700, 'testing'), (600, 'unstable')
> Architecture: amd64 (x86_64)
>
> Kernel: Linux 2.6.32-trunk-amd64 (SMP w/2 CPU cores)
> Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/dash
>
> Versions of packages grub-pc depends on:
> ii debconf [debconf-2.0] 1.5.28 Debian configuration management sy
> ii grub-common 1.98~20100128-1.2 GRand Unified Bootloader, version
> ii libc6 2.10.2-6 Embedded GNU C Library: Shared lib
> ii ucf 3.0025 Update Configuration File: preserv
>
> grub-pc recommends no packages.
>
> Versions of packages grub-pc suggests:
> pn desktop-base <none> (no description available)
>
> -- debconf information:
> grub-pc/kopt_extracted: false
> grub2/kfreebsd_cmdline:
> * grub-pc/install_devices: /dev/sda, /dev/sdb
> grub-pc/postrm_purge_boot_grub: false
> * grub2/linux_cmdline:
> grub2/kfreebsd_cmdline_default: quiet
> * grub2/linux_cmdline_default: quiet
> grub-pc/chainload_from_menu.lst: true
>
>
>
> _______________________________________________
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> Pkg-grub-devel at lists.alioth.debian.org
> http://lists.alioth.debian.org/mailman/listinfo/pkg-grub-devel
>
>
--
Regards
Vladimir 'φ-coder/phcoder' Serbinenko
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