Package: grub-pc
Version: 1.98~20100101-1
Severity: important
My new Asus M4A785-M motherboard by default presents usb devices as floppies by
default when booting.
This always breaks the boot, it says
error: fd1 cannot get C/H/S values
and leaves me at the rescue prompt.
If I type
insmod /boot/grub/linux.mod
normal
I get the menu file as expected and everything works.
This is related to the BIOS of this motherboard, which presents USB storage
devices as floppies during boot. The default setting 'Auto' for USB Mass
Storage Device Configuration gives this error. If I set USB Mass Storage Device
Configuration to 'Hard Disk', I don't get an error.
I did find a bug report during late night debugging somewhere on the web where
the error from probing the
floppy set the errno variable, which variable wasn't cleared in the next
function (insmod, IIRC), so it
appeared the next function did return an error, and rescue mode was started.
Unfortunately, I haven't been able to find this report again on re-searching
the WWW.
Hacking the source of grub-pc to display the C/H/S values found gave me:
error: fd1 cannot get C/H/S values (C/H/S 421/165/56)
At the moment, I've solved it by changing my BIOS setup, but an error (any
error) about a floppy drive
where the grub.cfg doesn't need a floppy to boot shouldn't interrupt normal
booting. It might warn, but
it shouldn't stop booting. Also, the message is at least misleading since there
are C/H/S values found
internally.
The motherboard is a common AM2+ socket consumer motherboard with AMD's 785G
chipset.
Kind regards,
Jurriaan
-- Package-specific info:
*********************** BEGIN /proc/mounts
/dev/disk/by-uuid/a0f917c8-5e68-4726-81f9-4659034e80f4 / ext2
rw,relatime,errors=remount-ro 0 0
/dev/sdb1 /space1 ext3 rw,relatime,errors=continue,data=ordered 0 0
/dev/sdd1 /space2 ext3 rw,relatime,errors=continue,data=ordered 0 0
/dev/sdc4 /backup ext3 rw,relatime,errors=continue,data=ordered 0 0
/dev/sda5 /old ext2 rw,relatime,errors=continue 0 0
*********************** END /proc/mounts
*********************** BEGIN /boot/grub/device.map
(hd0) /dev/sda
(hd1) /dev/sdb
(hd2) /dev/sdc
(hd3) /dev/sdd
*********************** 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 mdraid
insmod ext2
set root=(md0)
search --no-floppy --fs-uuid --set a0f917c8-5e68-4726-81f9-4659034e80f4
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 locale_dir=/boot/grub/locale
set lang=en
insmod gettext
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 a0f917c8-5e68-4726-81f9-4659034e80f4
insmod png
if background_image /boot/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, with Linux 2.6.32-trunk-amd64" {
insmod raid
insmod mdraid
insmod ext2
set root=(md0)
search --no-floppy --fs-uuid --set a0f917c8-5e68-4726-81f9-4659034e80f4
linux /boot/vmlinuz-2.6.32-trunk-amd64
root=UUID=a0f917c8-5e68-4726-81f9-4659034e80f4 ro quiet
initrd /boot/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=(md0)
search --no-floppy --fs-uuid --set a0f917c8-5e68-4726-81f9-4659034e80f4
linux /boot/vmlinuz-2.6.32-trunk-amd64
root=UUID=a0f917c8-5e68-4726-81f9-4659034e80f4 ro single
initrd /boot/initrd.img-2.6.32-trunk-amd64
}
menuentry "Debian GNU/Linux, with Linux 2.6.30-2-amd64" {
insmod raid
insmod mdraid
insmod ext2
set root=(md0)
search --no-floppy --fs-uuid --set a0f917c8-5e68-4726-81f9-4659034e80f4
linux /boot/vmlinuz-2.6.30-2-amd64
root=UUID=a0f917c8-5e68-4726-81f9-4659034e80f4 ro quiet
initrd /boot/initrd.img-2.6.30-2-amd64
}
menuentry "Debian GNU/Linux, with Linux 2.6.30-2-amd64 (recovery mode)" {
insmod raid
insmod mdraid
insmod ext2
set root=(md0)
search --no-floppy --fs-uuid --set a0f917c8-5e68-4726-81f9-4659034e80f4
linux /boot/vmlinuz-2.6.30-2-amd64
root=UUID=a0f917c8-5e68-4726-81f9-4659034e80f4 ro single
initrd /boot/initrd.img-2.6.30-2-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 unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.32-trunk-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.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 1.98~20100101-1 GRand Unified Bootloader, version
ii libc6 2.10.2-4 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:
ii desktop-base 5.0.5 common files for the Debian Deskto
-- debconf information:
grub-pc/kopt_extracted: false
grub2/kfreebsd_cmdline:
* grub-pc/install_devices: (hd0)
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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