你好。我有 Windows/Ubuntu 11.04 双启动设置，突然 Windows 停止启动。我的意思是它甚至没有出现在启动列表中。这些文件看起来很好，Ubuntu 启动也很好。我试图编写可启动的 SD 卡，但我认为我dd在错误的设备上进行了操作。这是我使用启动信息得出的结果脚本
Boot Info Script 0.60 from 17 May 2011
============================= Boot Info Summary: ===============================
=> Grub2 (v1.99) is installed in the MBR of /dev/sda and looks at sector 1 of
the same hard drive for core.img. core.img is at this location and looks
for (,msdos5)/boot/grub on this drive.
=> Windows is installed in the MBR of /dev/sdc.
sda1: __________________________________________________________________________
File system:
Boot sector type: -
Boot sector info:
Mounting failed: mount: tipo de sistema de ficheros '' desconocido
sda2: __________________________________________________________________________
File system: ntfs
Boot sector type: Windows Vista/7
Boot sector info: No errors found in the Boot Parameter Block.
Operating System: Windows 7
Boot files: /Windows/System32/winload.exe
sda3: __________________________________________________________________________
File system: Extended Partition
Boot sector type: -
Boot sector info:
sda5: __________________________________________________________________________
File system: ext4
Boot sector type: -
Boot sector info:
Operating System: Ubuntu 11.04
Boot files: /boot/grub/grub.cfg /etc/fstab /boot/grub/core.img
sda6: __________________________________________________________________________
File system: swap
Boot sector type: -
Boot sector info:
sda4: __________________________________________________________________________
File system: ntfs
Boot sector type: Windows Vista/7
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files: /bootmgr /boot/bcd
sdc1: __________________________________________________________________________
File system: vfat
Boot sector type: MSWIN4.1: FAT32
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files:
============================ Drive/Partition Info: =============================
Drive: sda _____________________________________________________________________
Disco /dev/sda: 500.1 GB, 500107862016 bytes
255 cabezas, 63 sectores/pista, 60801 cilindros, 976773168 sectores en total
Unidades = sectores de 1 * 512 = 512 bytes
Tamaño de sector (lógico / físico): 512 bytes / 512 bytes
Partition Boot Start Sector End Sector # of Sectors Id System
/dev/sda1 * 2,048 206,847 204,800 7 NTFS / exFAT / HPFS
/dev/sda2 206,848 507,270,071 507,063,224 7 NTFS / exFAT / HPFS
/dev/sda3 507,271,166 947,263,487 439,992,322 5 Extended
/dev/sda5 507,271,168 929,343,487 422,072,320 83 Linux
/dev/sda6 929,345,536 947,263,487 17,917,952 82 Linux swap / Solaris
/dev/sda4 947,263,488 976,771,071 29,507,584 7 NTFS / exFAT / HPFS
Drive: sdc _____________________________________________________________________
Disco /dev/sdc: 3980 MB, 3980394496 bytes
9 cabezas, 9 sectores/pista, 95977 cilindros, 7774208 sectores en total
Unidades = sectores de 1 * 512 = 512 bytes
Tamaño de sector (lógico / físico): 512 bytes / 512 bytes
Partition Boot Start Sector End Sector # of Sectors Id System
/dev/sdc1 * 8,064 7,774,207 7,766,144 c W95 FAT32 (LBA)
"blkid" output: ________________________________________________________________
Device UUID TYPE LABEL
/dev/loop0 squashfs
/dev/sda2 CCE8A9EEE8A9D6CC ntfs OS
/dev/sda4 6C881B1A881AE1FE ntfs HP_RECOVERY
/dev/sda5 450c3618-b8f1-4c80-b767-6018e086e409 ext4
/dev/sda6 ec2f0f7b-769f-46db-8957-f8e8b7f7de35 swap
/dev/sdc1 B805-7488 vfat KINGSTON
================================ Mount points: =================================
Device Mount_Point Type Options
/dev/loop0 /rofs squashfs (ro,noatime)
/dev/sdc1 /media/KINGSTON vfat (rw,nosuid,nodev,uhelper=udisks,uid=999,gid=999,shortname=mixed,dmask=0077,utf8=1,showexec,flush)
/dev/sr0 /cdrom iso9660 (ro,noatime)
=========================== sda5/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 $prefix/grubenv ]; then
set have_grubenv=true
load_env
fi
set default="5"
if [ "${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="${chosen}"
save_env saved_entry
fi
}
function recordfail {
set recordfail=1
if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ];
then save_env recordfail; fi; fi
}
function load_video {
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
}
insmod part_msdos
insmod ext2
set root='(/dev/sda,msdos5)'
search --no-floppy --fs-uuid --set=root 450c3618-b8f1-4c80-b767-6018e086e409
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=auto
load_video
insmod gfxterm
fi
terminal_output gfxterm
insmod part_msdos
insmod ext2
set root='(/dev/sda,msdos5)'
search --no-floppy --fs-uuid --set=root
450c3618-b8f1-4c80- b767-6018e086e409
set locale_dir=($root)/boot/grub/locale
set lang=fr_FR
insmod gettext
if [ "${recordfail}" = 1 ]; then
set timeout=-1
else
set timeout=20
fi
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
if background_color 44,0,30; then
clear
fi
### END /etc/grub.d/05_debian_theme ###
### BEGIN /etc/grub.d/10_linux ###
if [ ${recordfail} != 1 ]; then
if [ -e ${prefix}/gfxblacklist.txt ]; then
if hwmatch ${prefix}/gfxblacklist.txt 3; then
if [ ${match} = 0 ]; then
set linux_gfx_mode=keep
else
set linux_gfx_mode=text
fi
else
set linux_gfx_mode=text
fi
else
set linux_gfx_mode=keep
fi
else
set linux_gfx_mode=text
fi
export linux_gfx_mode
if [ "$linux_gfx_mode" != "text" ]; then load_video; fi
menuentry 'Ubuntu, avec Linux 2.6.38-11-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
set gfxpayload=$linux_gfx_mode
insmod part_msdos
insmod ext2
set root='(/dev/sda,msdos5)'
search --no-floppy --fs-uuid --set=root 450c3618-b8f1-4c80-b767-6018e086e409
linux /boot/vmlinuz-2.6.38-11-generic root=UUID=450c3618-b8f1-4c80-b767-6018e086e409 ro quiet splash vt.handoff=7
initrd /boot/initrd.img-2.6.38-11-generic
}
menuentry 'Ubuntu, avec Linux 2.6.38-11-generic (mode de dépannage)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
set gfxpayload=$linux_gfx_mode
insmod part_msdos
insmod ext2
set root='(/dev/sda,msdos5)'
search --no-floppy --fs-uuid --set=root 450c3618-b8f1-4c80-b767-6018e086e409
echo 'Loading Linux 2.6.38-11-generic ...'
linux /boot/vmlinuz-2.6.38-11-generic root=UUID=450c3618-b8f1-4c80-b767-6018e086e409 ro single
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-2.6.38-11-generic
}
submenu "Previous Linux versions" {
menuentry 'Ubuntu, avec Linux 2.6.38-10-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
set gfxpayload=$linux_gfx_mode
insmod part_msdos
insmod ext2
set root='(/dev/sda,msdos5)'
search --no-floppy --fs-uuid --set=root 450c3618-b8f1-4c80-b767-6018e086e409
linux /boot/vmlinuz-2.6.38-10-generic root=UUID=450c3618-b8f1-4c80-b767-6018e086e409 ro quiet splash vt.handoff=7
initrd /boot/initrd.img-2.6.38-10-generic
}
menuentry 'Ubuntu, avec Linux 2.6.38-10-generic (mode de dépannage)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
set gfxpayload=$linux_gfx_mode
insmod part_msdos
insmod ext2
set root='(/dev/sda,msdos5)'
search --no-floppy --fs-uuid --set=root 450c3618-b8f1-4c80-b767-6018e086e409
echo 'Loading Linux 2.6.38-10-generic ...'
linux /boot/vmlinuz-2.6.38-10-generic root=UUID=450c3618-b8f1-4c80-b767-6018e086e409 ro single
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-2.6.38-10-generic
}
menuentry 'Ubuntu, avec Linux 2.6.38-8-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
set gfxpayload=$linux_gfx_mode
insmod part_msdos
insmod ext2
set root='(/dev/sda,msdos5)'
search --no-floppy --fs-uuid --set=root 450c3618-b8f1-4c80-b767-6018e086e409
linux /boot/vmlinuz-2.6.38-8-generic root=UUID=450c3618-b8f1-4c80-b767-6018e086e409 ro quiet splash vt.handoff=7
initrd /boot/initrd.img-2.6.38-8-generic
}
menuentry 'Ubuntu, avec Linux 2.6.38-8-generic (mode de dépannage)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
set gfxpayload=$linux_gfx_mode
insmod part_msdos
insmod ext2
set root='(/dev/sda,msdos5)'
search --no-floppy --fs-uuid --set=root 450c3618-b8f1-4c80-b767-6018e086e409
echo 'Loading Linux 2.6.38-8-generic ...'
linux /boot/vmlinuz-2.6.38-8-generic root=UUID=450c3618-b8f1-4c80-b767-6018e086e409 ro single
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-2.6.38-8-generic
}
menuentry 'Ubuntu, avec Linux 2.6.35-28-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
set gfxpayload=$linux_gfx_mode
insmod part_msdos
insmod ext2
set root='(/dev/sda,msdos5)'
search --no-floppy --fs-uuid --set=root 450c3618-b8f1-4c80-b767-6018e086e409
linux /boot/vmlinuz-2.6.35-28-generic root=UUID=450c3618-b8f1-4c80-b767-6018e086e409 ro quiet splash vt.handoff=7
initrd /boot/initrd.img-2.6.35-28-generic
}
menuentry 'Ubuntu, avec Linux 2.6.35-28-generic (mode de dépannage)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
set gfxpayload=$linux_gfx_mode
insmod part_msdos
insmod ext2
set root='(/dev/sda,msdos5)'
search --no-floppy --fs-uuid --set=root 450c3618-b8f1-4c80-b767-6018e086e409
echo 'Loading Linux 2.6.35-28-generic ...'
linux /boot/vmlinuz-2.6.35-28-generic root=UUID=450c3618-b8f1-4c80-b767-6018e086e409 ro single
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-2.6.35-28-generic
}
}
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+)" {
insmod part_msdos
insmod ext2
set root='(/dev/sda,msdos5)'
search --no-floppy --fs-uuid --set=root 450c3618-b8f1-4c80-b767-6018e086e409
linux16 /boot/memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
insmod part_msdos
insmod ext2
set root='(/dev/sda,msdos5)'
search --no-floppy --fs-uuid --set=root 450c3618-b8f1-4c80-b767-6018e086e409
linux16 /boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###
### BEGIN /etc/grub.d/30_os-prober ###
menuentry "Windows Recovery Environment (loader) (on /dev/sda4)" --class windows --class os {
insmod part_msdos
insmod ntfs
set root='(/dev/sda,msdos4)'
search --no-floppy --fs-uuid --set=root 6C881B1A881AE1FE
drivemap -s (hd0) ${root}
chainloader +1
}
### 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 ###
### BEGIN /etc/grub.d/41_custom ###
if [ -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
--------------------------------------------------------------------------------
=============================== sda5/etc/fstab: ================================
--------------------------------------------------------------------------------
# /etc/fstab: static file system information.
#
# Use 'blkid -o value -s UUID' to print the universally unique identifier
# for a device; this may be used with UUID= as a more robust way to name
# devices that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc nodev,noexec,nosuid 0 0
# / was on /dev/sda5 during installation
# Commented out by Dropbox
# UUID=450c3618-b8f1-4c80-b767-6018e086e409 / ext4 errors=remount-ro 0 1
# swap was on /dev/sda6 during installation
UUID=ec2f0f7b-769f-46db-8957-f8e8b7f7de35 none swap sw 0 0
UUID=450c3618-b8f1-4c80-b767-6018e086e409 / ext4 errors=remount-ro,user_xattr 0 1
--------------------------------------------------------------------------------
=================== sda5: Location of files loaded by Grub: ====================
GiB - GB File Fragment(s)
414.013969421 = 444.544114688 boot/grub/core.img 1
280.472400665 = 301.154947072 boot/grub/grub.cfg 1
242.948242188 = 260.863688704 boot/initrd.img-2.6.35-28-generic 2
244.554271698 = 262.588149760 boot/initrd.img-2.6.38-10-generic 2
374.640209198 = 402.266861568 boot/initrd.img-2.6.38-11-generic 2
243.640205383 = 261.606678528 boot/initrd.img-2.6.38-8-generic 2
242.479492188 = 260.360372224 boot/vmlinuz-2.6.35-28-generic 2
243.815742493 = 261.795160064 boot/vmlinuz-2.6.38-10-generic 1
374.550117493 = 402.170126336 boot/vmlinuz-2.6.38-11-generic 1
248.460269928 = 266.782183424 boot/vmlinuz-2.6.38-8-generic 1
374.640209198 = 402.266861568 initrd.img 2
244.554271698 = 262.588149760 initrd.img.old 2
374.550117493 = 402.170126336 vmlinuz 1
243.815742493 = 261.795160064 vmlinuz.old 1
========= Devices which don't seem to have a corresponding hard drive: =========
sdb
=============================== StdErr Messages: ===============================
unlzma: Decoder error
有什么我可以做的，而不是重新安装一切？
答案1
你试过重新安装grub2吗？
答案2
我确实修复了 Windows 启动，然后它破坏了 grub，你必须再次重新安装它：如果有人需要更多信息，这里有一个链接https://help.ubuntu.com/community/Grub2
答案3
我时间不够了...无法检查整个 grub.cfg 文件。我也有多重启动。您可以检查我的 grub.cfg 文件以获取解决方案的任何线索：
#
# 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 $prefix/grubenv ]; then
set have_grubenv=true
load_env
fi
set default="0"
if [ "${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="${chosen}"
save_env saved_entry
fi
}
function recordfail {
set recordfail=1
if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; fi
}
function load_video {
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
}
insmod part_msdos
insmod ext2
set root='(hd1,msdos8)'
search --no-floppy --fs-uuid --set=root 1ba4108c-e35d-45d5-9c64-3d4d085486bf
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=auto
load_video
insmod gfxterm
insmod part_msdos
insmod ext2
set root='(hd1,msdos1)'
search --no-floppy --fs-uuid --set=root f7550d0e-3364-45a3-81d0-8f423c94868f
set locale_dir=($root)/grub/locale
set lang=en_US
insmod gettext
fi
terminal_output gfxterm
if [ "${recordfail}" = 1 ]; then
set timeout=-1
else
set timeout=10
fi
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
if background_color 44,0,30; then
clear
fi
### END /etc/grub.d/05_debian_theme ###
### BEGIN /etc/grub.d/10_linux ###
if [ ${recordfail} != 1 ]; then
if [ -e ${prefix}/gfxblacklist.txt ]; then
if hwmatch ${prefix}/gfxblacklist.txt 3; then
if [ ${match} = 0 ]; then
set linux_gfx_mode=keep
else
set linux_gfx_mode=text
fi
else
set linux_gfx_mode=text
fi
else
set linux_gfx_mode=keep
fi
else
set linux_gfx_mode=text
fi
export linux_gfx_mode
if [ "$linux_gfx_mode" != "text" ]; then load_video; fi
menuentry 'Ubuntu, with Linux 3.0.0-13-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
set gfxpayload=$linux_gfx_mode
insmod gzio
insmod part_msdos
insmod ext2
set root='(hd1,msdos1)'
search --no-floppy --fs-uuid --set=root f7550d0e-3364-45a3-81d0-8f423c94868f
linux /vmlinuz-3.0.0-13-generic root=UUID=1ba4108c-e35d-45d5-9c64-3d4d085486bf ro quiet splash vt.handoff=7
initrd /initrd.img-3.0.0-13-generic
}
menuentry 'Ubuntu, with Linux 3.0.0-13-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod gzio
insmod part_msdos
insmod ext2
set root='(hd1,msdos1)'
search --no-floppy --fs-uuid --set=root f7550d0e-3364-45a3-81d0-8f423c94868f
echo 'Loading Linux 3.0.0-13-generic ...'
linux /vmlinuz-3.0.0-13-generic root=UUID=1ba4108c-e35d-45d5-9c64-3d4d085486bf ro recovery nomodeset
echo 'Loading initial ramdisk ...'
initrd /initrd.img-3.0.0-13-generic
}
submenu "Previous Linux versions" {
menuentry 'Ubuntu, with Linux 3.0.0-12-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
set gfxpayload=$linux_gfx_mode
insmod gzio
insmod part_msdos
insmod ext2
set root='(hd1,msdos1)'
search --no-floppy --fs-uuid --set=root f7550d0e-3364-45a3-81d0-8f423c94868f
linux /vmlinuz-3.0.0-12-generic root=UUID=1ba4108c-e35d-45d5-9c64-3d4d085486bf ro quiet splash vt.handoff=7
initrd /initrd.img-3.0.0-12-generic
}
menuentry 'Ubuntu, with Linux 3.0.0-12-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod gzio
insmod part_msdos
insmod ext2
set root='(hd1,msdos1)'
search --no-floppy --fs-uuid --set=root f7550d0e-3364-45a3-81d0-8f423c94868f
echo 'Loading Linux 3.0.0-12-generic ...'
linux /vmlinuz-3.0.0-12-generic root=UUID=1ba4108c-e35d-45d5-9c64-3d4d085486bf ro recovery nomodeset
echo 'Loading initial ramdisk ...'
initrd /initrd.img-3.0.0-12-generic
}
}
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+)" {
insmod part_msdos
insmod ext2
set root='(hd1,msdos1)'
search --no-floppy --fs-uuid --set=root f7550d0e-3364-45a3-81d0-8f423c94868f
linux16 /memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
insmod part_msdos
insmod ext2
set root='(hd1,msdos1)'
search --no-floppy --fs-uuid --set=root f7550d0e-3364-45a3-81d0-8f423c94868f
linux16 /memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###
### BEGIN /etc/grub.d/30_os-prober ###
menuentry "Microsoft Windows XP Professional (on /dev/sda1)" --class windows --class os {
insmod part_msdos
insmod ntfs
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set=root E6C09302C092D85F
drivemap -s (hd0) ${root}
chainloader +1
}
### 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 ###
### BEGIN /etc/grub.d/41_custom ###
if [ -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
另外还要检查windows分区中的boot.ini文件是否存在。好运。