Bug#1103709: grub-pc: Failure to boot missing Windows disk may corrupt MBR
Richard Allen
rsaxvc at gmail.com
Sun Apr 20 22:03:13 BST 2025
Package: grub-pc
Version: 2.06-13+deb12u1
Severity: important
X-Debbugs-Cc: rsaxvc at gmail.com
Dear Maintainer,
I'm writing this report before I try upgrading to the backported grub. I wanted
to write all this down in case I wasn't able to boot afterwards again.
What led up to the situation? I've setup two operating system disks. Windows 10
is on the primary boot disk with its own bootloader(HD0 below).
Debian12+Grub2.06 is on another disk which I select from the BIOS(HD1 below).
Once a baremetal OS is booted, I boot the other disk under VirtualBox.
What exactly did you do (or not do) that was effective (or ineffective)? I
attempted to boot my Grub2.06+Debian/12 disk inside of VirtualBox on Windows
10. However, I looked away and grub timed out and chose Windows10(whose disk is
not visible in the VM)
What was the outcome of this action? Grub reported:
error: no such device: ${Win10_DISK_ID}
setting partition type to 0x83
error:disk `hd0,msdos1’ not found
error:disk `hd0,msdos1’ not found
After this, I was unable to boot Grub+Debian within VirtualBox or on bare-
metal. I have attached the MBRs of both disks, before and after this point.
What outcome did you expect instead? I expected that grub, upon failing to
locate the target boot drive, would not attempt to update the partition table.
To repair, I booted the machine with Debian-Live, rebuilt the partition table
with testdisk, then reinstalled grub and was able to boot both in VirtualBox
and natively.
-- Package-specific info:
*********************** BEGIN /proc/mounts
/dev/sdf1 / ext4 rw,relatime,errors=remount-ro 0 0
*********************** END /proc/mounts
*********************** BEGIN /boot/grub/device.map
(hd0) /dev/disk/by-id/ata-Samsung_SSD_840_EVO_500GB_S1DHNSAFA00613T
(hd1) /dev/disk/by-id/ata-INTEL_SSDSC2BW240A4_PHDA4333001L2403GN
(hd2) /dev/disk/by-id/ata-HGST_HTS725032A7E630_TF7B5AY9KVTGLM
(hd3) /dev/disk/by-id/usb-__070B4C5F21223947-0:0
(hd4) /dev/disk/by-id/ata-ST250DM000-1BD141_9VYLHAR0
(hd5) /dev/disk/by-id/ata-WDC_WD400JD-22JNA0_WD-WMAMA1246391
(hd6) /dev/disk/by-id/ata-WDC_WD10EURX-73C57Y0_WD-WCC4J0674753
(hd7) /dev/disk/by-id/ata-WDC_WD10EARS-00Y5B1_WD-WCAV55474379
(hd8) /dev/disk/by-id/scsi-SSEAGATE_ST973401LSUN72G381100XT_3LB100XT
(hd9) /dev/disk/by-id/scsi-SSEAGATE_ST973401LSUN72G3710YV16_3LB0YV16
(hd10) /dev/disk/by-id/scsi-35000c500077c2783
(hd11) /dev/disk/by-id/scsi-SSEAGATE_ST973401LSUN72G1010Q8SL_3LB0Q8SL
*********************** END /boot/grub/device.map
*********************** BEGIN /boot/grub/grub.cfg
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#
### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
set have_grubenv=true
load_env
fi
if [ "${next_entry}" ] ; then
set default="${next_entry}"
set next_entry=
save_env next_entry
set boot_once=true
else
set default="0"
fi
if [ x"${feature_menuentry_id}" = xy ]; then
menuentry_id_option="--id"
else
menuentry_id_option=""
fi
export menuentry_id_option
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
}
function load_video {
if [ x$feature_all_video_module = xy ]; then
insmod all_video
else
insmod efi_gop
insmod efi_uga
insmod ieee1275_fb
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
fi
}
if [ x$feature_default_font_path = xy ] ; then
font=unicode
else
insmod part_msdos
insmod ext2
set root='hd1,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd5,msdos1 --hint-efi=hd5,msdos1 --hint-baremetal=ahci5,msdos1 --hint='hd1,msdos1' 6b9f70b0-1ec1-4ad9-a55c-d772980f3e81
else
search --no-floppy --fs-uuid --set=root 6b9f70b0-1ec1-4ad9-a55c-d772980f3e81
fi
font="/usr/share/grub/unicode.pf2"
fi
if loadfont $font ; then
set gfxmode=auto
load_video
insmod gfxterm
set locale_dir=$prefix/locale
set lang=en_US
insmod gettext
fi
terminal_output gfxterm
if [ "${recordfail}" = 1 ] ; then
set timeout=30
else
if [ x$feature_timeout_style = xy ] ; then
set timeout_style=menu
set timeout=5
# Fallback normal timeout code in case the timeout_style feature is
# unavailable.
else
set timeout=5
fi
fi
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/05_debian_theme ###
insmod part_msdos
insmod ext2
set root='hd1,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd5,msdos1 --hint-efi=hd5,msdos1 --hint-baremetal=ahci5,msdos1 --hint='hd1,msdos1' 6b9f70b0-1ec1-4ad9-a55c-d772980f3e81
else
search --no-floppy --fs-uuid --set=root 6b9f70b0-1ec1-4ad9-a55c-d772980f3e81
fi
insmod png
if background_image /usr/share/desktop-base/emerald-theme/grub/grub-4x3.png; then
set color_normal=white/black
set color_highlight=black/white
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/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/30_os-prober ###
menuentry 'Windows 10 (on /dev/sdc1)' --class windows --class os $menuentry_id_option 'osprober-chain-7460727360723BC4' {
insmod part_msdos
insmod ntfs
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd2,msdos1 --hint-efi=hd2,msdos1 --hint-baremetal=ahci2,msdos1 --hint='hd0,msdos1' 7460727360723BC4
else
search --no-floppy --fs-uuid --set=root 7460727360723BC4
fi
parttool ${root} hidden-
drivemap -s (hd0) ${root}
chainloader +1
}
### END /etc/grub.d/30_os-prober ###
### BEGIN /etc/grub.d/30_uefi-firmware ###
### END /etc/grub.d/30_uefi-firmware ###
### BEGIN /etc/grub.d/35_linux ###
function gfxmode {
set gfxpayload="${1}"
}
set linux_gfx_mode=
export linux_gfx_mode
menuentry 'Debian GNU/Linux' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-6b9f70b0-1ec1-4ad9-a55c-d772980f3e81' {
load_video
insmod gzio
if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
insmod part_msdos
insmod ext2
set root='hd1,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd5,msdos1 --hint-efi=hd5,msdos1 --hint-baremetal=ahci5,msdos1 --hint='hd1,msdos1' 6b9f70b0-1ec1-4ad9-a55c-d772980f3e81
else
search --no-floppy --fs-uuid --set=root 6b9f70b0-1ec1-4ad9-a55c-d772980f3e81
fi
echo 'Loading Linux 6.1.0-33-amd64 ...'
linux /boot/vmlinuz-6.1.0-33-amd64 root=UUID=6b9f70b0-1ec1-4ad9-a55c-d772980f3e81 ro
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-6.1.0-33-amd64
}
submenu 'Advanced options for Debian GNU/Linux' $menuentry_id_option 'gnulinux-advanced-6b9f70b0-1ec1-4ad9-a55c-d772980f3e81' {
menuentry 'Debian GNU/Linux, with Linux 6.1.0-33-amd64' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.1.0-33-amd64-advanced-6b9f70b0-1ec1-4ad9-a55c-d772980f3e81' {
load_video
insmod gzio
if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
insmod part_msdos
insmod ext2
set root='hd1,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd5,msdos1 --hint-efi=hd5,msdos1 --hint-baremetal=ahci5,msdos1 --hint='hd1,msdos1' 6b9f70b0-1ec1-4ad9-a55c-d772980f3e81
else
search --no-floppy --fs-uuid --set=root 6b9f70b0-1ec1-4ad9-a55c-d772980f3e81
fi
echo 'Loading Linux 6.1.0-33-amd64 ...'
linux /boot/vmlinuz-6.1.0-33-amd64 root=UUID=6b9f70b0-1ec1-4ad9-a55c-d772980f3e81 ro
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-6.1.0-33-amd64
}
menuentry 'Debian GNU/Linux, with Linux 6.1.0-33-amd64 (systemd)' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.1.0-33-amd64-init-systemd-6b9f70b0-1ec1-4ad9-a55c-d772980f3e81' {
load_video
insmod gzio
if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
insmod part_msdos
insmod ext2
set root='hd1,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd5,msdos1 --hint-efi=hd5,msdos1 --hint-baremetal=ahci5,msdos1 --hint='hd1,msdos1' 6b9f70b0-1ec1-4ad9-a55c-d772980f3e81
else
search --no-floppy --fs-uuid --set=root 6b9f70b0-1ec1-4ad9-a55c-d772980f3e81
fi
echo 'Loading Linux 6.1.0-33-amd64 ...'
linux /boot/vmlinuz-6.1.0-33-amd64 root=UUID=6b9f70b0-1ec1-4ad9-a55c-d772980f3e81 ro init=/lib/systemd/systemd
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-6.1.0-33-amd64
}
menuentry 'Debian GNU/Linux, with Linux 6.1.0-33-amd64 (recovery mode)' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.1.0-33-amd64-recovery-6b9f70b0-1ec1-4ad9-a55c-d772980f3e81' {
load_video
insmod gzio
if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
insmod part_msdos
insmod ext2
set root='hd1,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd5,msdos1 --hint-efi=hd5,msdos1 --hint-baremetal=ahci5,msdos1 --hint='hd1,msdos1' 6b9f70b0-1ec1-4ad9-a55c-d772980f3e81
else
search --no-floppy --fs-uuid --set=root 6b9f70b0-1ec1-4ad9-a55c-d772980f3e81
fi
echo 'Loading Linux 6.1.0-33-amd64 ...'
linux /boot/vmlinuz-6.1.0-33-amd64 root=UUID=6b9f70b0-1ec1-4ad9-a55c-d772980f3e81 ro single
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-6.1.0-33-amd64
}
}
### END /etc/grub.d/35_linux ###
### 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 ###
### BEGIN /etc/grub.d/41_custom ###
if [ -f ${config_directory}/custom.cfg ]; then
source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg
fi
### END /etc/grub.d/41_custom ###
*********************** END /boot/grub/grub.cfg
*********************** BEGIN /proc/mdstat
Personalities : [raid6] [raid5] [raid4] [linear] [multipath] [raid0] [raid1] [raid10]
md126 : active (auto-read-only) raid5 sda[3] sdb[2] sdd[1] sde[0]
5567515648 blocks super external:/md127/0 level 5, 64k chunk, algorithm 0 [4/4] [UUUU]
md127 : inactive sdb[3](S) sda[2](S) sdd[1](S) sde[0](S)
20804 blocks super external:imsm
unused devices: <none>
*********************** END /proc/mdstat
*********************** BEGIN LVM
*********************** END LVM
*********************** BEGIN /dev/disk/by-id
total 0
lrwxrwxrwx 1 root root 9 Apr 20 14:28 ata-INTEL_SSDSC2BW240A4_PHDA4333001L2403GN -> ../../sdf
lrwxrwxrwx 1 root root 10 Apr 20 14:28 ata-INTEL_SSDSC2BW240A4_PHDA4333001L2403GN-part1 -> ../../sdf1
lrwxrwxrwx 1 root root 9 Apr 20 14:28 ata-MB2000GCWDA_Z1X29TCS -> ../../sdb
lrwxrwxrwx 1 root root 9 Apr 20 14:28 ata-MB2000GCWDA_Z1Y1SYXX -> ../../sda
lrwxrwxrwx 1 root root 9 Apr 20 14:28 ata-MB2000GCWDA_Z1Y1WH0S -> ../../sde
lrwxrwxrwx 1 root root 9 Apr 20 14:28 ata-MB2000GCWDA_Z1Y1YRE4 -> ../../sdd
lrwxrwxrwx 1 root root 9 Apr 20 14:28 ata-ST2000LM003_HN-M201RAD_S34RJ9EG735436 -> ../../sdh
lrwxrwxrwx 1 root root 10 Apr 20 14:28 ata-ST2000LM003_HN-M201RAD_S34RJ9EG735436-part1 -> ../../sdh1
lrwxrwxrwx 1 root root 9 Apr 20 14:28 ata-ST2000LM003_HN-M201RAD_S34RJ9FG217135 -> ../../sdg
lrwxrwxrwx 1 root root 10 Apr 20 14:28 ata-ST2000LM003_HN-M201RAD_S34RJ9FG217135-part1 -> ../../sdg1
lrwxrwxrwx 1 root root 9 Apr 20 14:28 ata-Samsung_SSD_840_EVO_500GB_S1DHNSAFA00613T -> ../../sdc
lrwxrwxrwx 1 root root 10 Apr 20 14:28 ata-Samsung_SSD_840_EVO_500GB_S1DHNSAFA00613T-part1 -> ../../sdc1
lrwxrwxrwx 1 root root 10 Apr 20 14:28 ata-Samsung_SSD_840_EVO_500GB_S1DHNSAFA00613T-part2 -> ../../sdc2
lrwxrwxrwx 1 root root 10 Apr 20 14:28 ata-Samsung_SSD_840_EVO_500GB_S1DHNSAFA00613T-part3 -> ../../sdc3
lrwxrwxrwx 1 root root 9 Apr 20 14:28 ata-hp_DVD_A_DH16AESH_2L8338900215 -> ../../sr0
lrwxrwxrwx 1 root root 11 Apr 20 14:28 md-uuid-8be1a6f2:64a7cb96:1b78e2e5:7225950a -> ../../md126
lrwxrwxrwx 1 root root 13 Apr 20 14:28 md-uuid-8be1a6f2:64a7cb96:1b78e2e5:7225950a-part1 -> ../../md126p1
lrwxrwxrwx 1 root root 13 Apr 20 14:28 md-uuid-8be1a6f2:64a7cb96:1b78e2e5:7225950a-part2 -> ../../md126p2
lrwxrwxrwx 1 root root 11 Apr 20 14:28 md-uuid-9b2f5b80:a9570879:af4444d0:955b724d -> ../../md127
lrwxrwxrwx 1 root root 13 Apr 20 14:28 nvme-INTEL_SSDPEKNW020T8_PHNH852200342P0C -> ../../nvme0n1
lrwxrwxrwx 1 root root 15 Apr 20 14:28 nvme-INTEL_SSDPEKNW020T8_PHNH852200342P0C-part1 -> ../../nvme0n1p1
lrwxrwxrwx 1 root root 13 Apr 20 14:28 nvme-INTEL_SSDPEKNW020T8_PHNH852200342P0C_1 -> ../../nvme0n1
lrwxrwxrwx 1 root root 15 Apr 20 14:28 nvme-INTEL_SSDPEKNW020T8_PHNH852200342P0C_1-part1 -> ../../nvme0n1p1
lrwxrwxrwx 1 root root 13 Apr 20 14:28 nvme-eui.0000000001000000e4d25c46776a5001 -> ../../nvme0n1
lrwxrwxrwx 1 root root 15 Apr 20 14:28 nvme-eui.0000000001000000e4d25c46776a5001-part1 -> ../../nvme0n1p1
lrwxrwxrwx 1 root root 9 Apr 20 14:28 wwn-0x50004cf20f3260d8 -> ../../sdg
lrwxrwxrwx 1 root root 10 Apr 20 14:28 wwn-0x50004cf20f3260d8-part1 -> ../../sdg1
lrwxrwxrwx 1 root root 9 Apr 20 14:28 wwn-0x50004cf210262411 -> ../../sdh
lrwxrwxrwx 1 root root 10 Apr 20 14:28 wwn-0x50004cf210262411-part1 -> ../../sdh1
lrwxrwxrwx 1 root root 9 Apr 20 14:28 wwn-0x5000c50066ce35ae -> ../../sdb
lrwxrwxrwx 1 root root 9 Apr 20 14:28 wwn-0x5000c500673a8e4f -> ../../sda
lrwxrwxrwx 1 root root 9 Apr 20 14:28 wwn-0x5000c50067654094 -> ../../sde
lrwxrwxrwx 1 root root 9 Apr 20 14:28 wwn-0x5000c50078c23f25 -> ../../sdd
lrwxrwxrwx 1 root root 9 Apr 20 14:28 wwn-0x50025388a0716cc3 -> ../../sdc
lrwxrwxrwx 1 root root 10 Apr 20 14:28 wwn-0x50025388a0716cc3-part1 -> ../../sdc1
lrwxrwxrwx 1 root root 10 Apr 20 14:28 wwn-0x50025388a0716cc3-part2 -> ../../sdc2
lrwxrwxrwx 1 root root 10 Apr 20 14:28 wwn-0x50025388a0716cc3-part3 -> ../../sdc3
lrwxrwxrwx 1 root root 9 Apr 20 14:28 wwn-0x55cd2e404ba257ba -> ../../sdf
lrwxrwxrwx 1 root root 10 Apr 20 14:28 wwn-0x55cd2e404ba257ba-part1 -> ../../sdf1
*********************** END /dev/disk/by-id
*********************** BEGIN /dev/disk/by-uuid
total 0
lrwxrwxrwx 1 root root 10 Apr 20 14:28 2C0273D80273A60C -> ../../sdc2
lrwxrwxrwx 1 root root 15 Apr 20 14:28 5709a0d9-14d3-47a8-a65c-7896881e5d0b -> ../../nvme0n1p1
lrwxrwxrwx 1 root root 10 Apr 20 14:28 5ECA9A05CA99DA1B -> ../../sdc3
lrwxrwxrwx 1 root root 10 Apr 20 14:28 6b9f70b0-1ec1-4ad9-a55c-d772980f3e81 -> ../../sdf1
lrwxrwxrwx 1 root root 10 Apr 20 14:28 727805727805367F -> ../../sdg1
lrwxrwxrwx 1 root root 10 Apr 20 14:28 72FACCC5FACC86B7 -> ../../sdh1
lrwxrwxrwx 1 root root 10 Apr 20 14:28 7460727360723BC4 -> ../../sdc1
*********************** END /dev/disk/by-uuid
-- System Information:
Debian Release: 12.10
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable'), (100, 'bookworm-fasttrack'), (100, 'bookworm-backports-staging')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 6.1.0-33-amd64 (SMP w/24 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages grub-pc depends on:
ii debconf [debconf-2.0] 1.5.82
ii grub-common 2.06-13+deb12u1
ii grub-pc-bin 2.06-13+deb12u1
ii grub2-common 2.06-13+deb12u1
ii ucf 3.0043+nmu1+deb12u1
grub-pc recommends no packages.
grub-pc suggests no packages.
-- debconf information:
grub2/force_efi_extra_removable: false
grub-pc/timeout: 5
grub2/kfreebsd_cmdline_default: quiet
grub-pc/install_devices_empty: false
* grub-pc/install_devices: /dev/disk/by-id/ata-Samsung_SSD_840_EVO_500GB_S1DHNSAFA00613T
* grub2/linux_cmdline_default:
grub-pc/postrm_purge_boot_grub: false
grub-pc/mixed_legacy_and_grub2: true
grub2/kfreebsd_cmdline:
grub2/device_map_regenerated:
grub-pc/install_devices_failed: false
grub-pc/install_devices_disks_changed:
grub-pc/partition_description:
grub2/update_nvram: true
grub-pc/hidden_timeout: false
grub-pc/kopt_extracted: false
* grub2/enable_os_prober: false
* grub2/linux_cmdline:
grub-pc/disk_description:
grub-pc/install_devices_failed_upgrade: true
grub-pc/chainload_from_menu.lst: true
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