我的笔记本电脑预装了 Windows 8.1。
我设置了双启动。一切似乎都很好，从菜单中选择操作系统后，我毫无问题地访问了 Ubuntu。我应该补充一点，启动方法已更改为传统方法。
但是，自从使用 Ubuntu 以来，我不再能够选择操作系统。笔记本电脑直接启动到 Ubuntu。
因此，我尝试访问恢复选项，但似乎 Windows 8 引导加载程序已以某种方式损坏，因为我现在被告知使用 Windows 8 恢复光盘（因为这是预先安装的 - 我没有）。
我再次尝试启动修复，但没有成功。重新启动时，我只看到一个基本的启动画面，要求我选择 Ubuntu、Memtest、Windows 8 Recovery 或 Windows 8 Bootloader（引导加载程序再次要求我插入光盘）。
我努力了
cat /boot/grub/grub.cfg
df -h
sudo fdisk -l
cat /proc/partitions
# 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 recordfail {
set recordfail=1
if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; 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_gpt
insmod ext2
set root='hd0,gpt9'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt9 --hint-efi=hd0,gpt9 --hint-baremetal=ahci0,gpt9 d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
else
search --no-floppy --fs-uuid --set=root d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
fi
font="/usr/share/grub/unicode.pf2"
fi
if loadfont $font ; then
set gfxmode=800x600
load_video
insmod gfxterm
set locale_dir=$prefix/locale
set lang=en_GB
insmod gettext
fi
terminal_output gfxterm
if [ "${recordfail}" = 1 ] ; then
set timeout=-1
else
if [ x$feature_timeout_style = xy ] ; then
set timeout_style=menu
set timeout=20
# Fallback normal timeout code in case the timeout_style feature is
# unavailable.
else
set timeout=20
fi
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 ###
function gfxmode {
set gfxpayload="${1}"
if [ "${1}" = "keep" ]; then
set vt_handoff=vt.handoff=7
else
set vt_handoff=
fi
}
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
menuentry 'Ubuntu' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-d2f10f36-e3bb-4d83-a9b8-5d456fc454ad' {
recordfail
load_video
gfxmode $linux_gfx_mode
insmod gzio
insmod part_gpt
insmod ext2
set root='hd0,gpt9'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt9 --hint-efi=hd0,gpt9 --hint-baremetal=ahci0,gpt9 d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
else
search --no-floppy --fs-uuid --set=root d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
fi
linux /boot/vmlinuz-3.13.0-29-generic root=UUID=d2f10f36-e3bb-4d83-a9b8-5d456fc454ad ro vga=789 quiet quiet splash $vt_handoff
initrd /boot/initrd.img-3.13.0-29-generic
}
submenu 'Advanced options for Ubuntu' $menuentry_id_option 'gnulinux-advanced-d2f10f36-e3bb-4d83-a9b8-5d456fc454ad' {
menuentry 'Ubuntu, with Linux 3.13.0-29-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.13.0-29-generic-advanced-d2f10f36-e3bb-4d83-a9b8-5d456fc454ad' {
recordfail
load_video
gfxmode $linux_gfx_mode
insmod gzio
insmod part_gpt
insmod ext2
set root='hd0,gpt9'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt9 --hint-efi=hd0,gpt9 --hint-baremetal=ahci0,gpt9 d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
else
search --no-floppy --fs-uuid --set=root d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
fi
echo 'Loading Linux 3.13.0-29-generic ...'
linux /boot/vmlinuz-3.13.0-29-generic root=UUID=d2f10f36-e3bb-4d83-a9b8-5d456fc454ad ro vga=789 quiet quiet splash $vt_handoff
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-3.13.0-29-generic
}
menuentry 'Ubuntu, with Linux 3.13.0-29-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.13.0-29-generic-recovery-d2f10f36-e3bb-4d83-a9b8-5d456fc454ad' {
recordfail
load_video
insmod gzio
insmod part_gpt
insmod ext2
set root='hd0,gpt9'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt9 --hint-efi=hd0,gpt9 --hint-baremetal=ahci0,gpt9 d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
else
search --no-floppy --fs-uuid --set=root d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
fi
echo 'Loading Linux 3.13.0-29-generic ...'
linux /boot/vmlinuz-3.13.0-29-generic root=UUID=d2f10f36-e3bb-4d83-a9b8-5d456fc454ad ro recovery nomodeset vga=789 quiet
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-3.13.0-29-generic
}
menuentry 'Ubuntu, with Linux 3.13.0-24-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.13.0-24-generic-advanced-d2f10f36-e3bb-4d83-a9b8-5d456fc454ad' {
recordfail
load_video
gfxmode $linux_gfx_mode
insmod gzio
insmod part_gpt
insmod ext2
set root='hd0,gpt9'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt9 --hint-efi=hd0,gpt9 --hint-baremetal=ahci0,gpt9 d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
else
search --no-floppy --fs-uuid --set=root d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
fi
echo 'Loading Linux 3.13.0-24-generic ...'
linux /boot/vmlinuz-3.13.0-24-generic root=UUID=d2f10f36-e3bb-4d83-a9b8-5d456fc454ad ro vga=789 quiet quiet splash $vt_handoff
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-3.13.0-24-generic
}
menuentry 'Ubuntu, with Linux 3.13.0-24-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.13.0-24-generic-recovery-d2f10f36-e3bb-4d83-a9b8-5d456fc454ad' {
recordfail
load_video
insmod gzio
insmod part_gpt
insmod ext2
set root='hd0,gpt9'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt9 --hint-efi=hd0,gpt9 --hint-baremetal=ahci0,gpt9 d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
else
search --no-floppy --fs-uuid --set=root d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
fi
echo 'Loading Linux 3.13.0-24-generic ...'
linux /boot/vmlinuz-3.13.0-24-generic root=UUID=d2f10f36-e3bb-4d83-a9b8-5d456fc454ad ro recovery nomodeset vga=789 quiet
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-3.13.0-24-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_gpt
insmod ext2
set root='hd0,gpt9'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt9 --hint-efi=hd0,gpt9 --hint-baremetal=ahci0,gpt9 d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
else
search --no-floppy --fs-uuid --set=root d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
fi
knetbsd /boot/memtest86+.elf
}
menuentry 'Memory test (memtest86+, serial console 115200)' {
insmod part_gpt
insmod ext2
set root='hd0,gpt9'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt9 --hint-efi=hd0,gpt9 --hint-baremetal=ahci0,gpt9 d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
else
search --no-floppy --fs-uuid --set=root d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
fi
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/sda2)' --class windows --class os $menuentry_id_option 'osprober-chain-7A6A69D66A698FA5' {
insmod part_gpt
insmod ntfs
set root='hd0,gpt2'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt2 --hint-efi=hd0,gpt2 --hint-baremetal=ahci0,gpt2 7A6A69D66A698FA5
else
search --no-floppy --fs-uuid --set=root 7A6A69D66A698FA5
fi
drivemap -s (hd0) ${root}
chainloader +1
}
menuentry 'Windows 8 (loader) (on /dev/sda3)' --class windows --class os $menuentry_id_option 'osprober-chain-8C88-80F7' {
insmod part_gpt
insmod fat
set root='hd0,gpt3'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt3 --hint-efi=hd0,gpt3 --hint-baremetal=ahci0,gpt3 8C88-80F7
else
search --no-floppy --fs-uuid --set=root 8C88-80F7
fi
drivemap -s (hd0) ${root}
chainloader +1
}
set timeout_style=menu
if [ "${timeout}" = 0 ]; then
set timeout=10
fi
### 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/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 ###
#
# 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 recordfail {
set recordfail=1
if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; 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_gpt
insmod ext2
set root='hd0,gpt9'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt9 --hint-efi=hd0,gpt9 --hint-baremetal=ahci0,gpt9 d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
else
search --no-floppy --fs-uuid --set=root d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
fi
font="/usr/share/grub/unicode.pf2"
fi
if loadfont $font ; then
set gfxmode=800x600
load_video
insmod gfxterm
set locale_dir=$prefix/locale
set lang=en_GB
insmod gettext
fi
terminal_output gfxterm
if [ "${recordfail}" = 1 ] ; then
set timeout=-1
else
if [ x$feature_timeout_style = xy ] ; then
set timeout_style=menu
set timeout=20
# Fallback normal timeout code in case the timeout_style feature is
# unavailable.
else
set timeout=20
fi
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 ###
function gfxmode {
set gfxpayload="${1}"
if [ "${1}" = "keep" ]; then
set vt_handoff=vt.handoff=7
else
set vt_handoff=
fi
}
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
menuentry 'Ubuntu' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-d2f10f36-e3bb-4d83-a9b8-5d456fc454ad' {
recordfail
load_video
gfxmode $linux_gfx_mode
insmod gzio
insmod part_gpt
insmod ext2
set root='hd0,gpt9'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt9 --hint-efi=hd0,gpt9 --hint-baremetal=ahci0,gpt9 d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
else
search --no-floppy --fs-uuid --set=root d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
fi
linux /boot/vmlinuz-3.13.0-29-generic root=UUID=d2f10f36-e3bb-4d83-a9b8-5d456fc454ad ro vga=789 quiet quiet splash $vt_handoff
initrd /boot/initrd.img-3.13.0-29-generic
}
submenu 'Advanced options for Ubuntu' $menuentry_id_option 'gnulinux-advanced-d2f10f36-e3bb-4d83-a9b8-5d456fc454ad' {
menuentry 'Ubuntu, with Linux 3.13.0-29-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.13.0-29-generic-advanced-d2f10f36-e3bb-4d83-a9b8-5d456fc454ad' {
recordfail
load_video
gfxmode $linux_gfx_mode
insmod gzio
insmod part_gpt
insmod ext2
set root='hd0,gpt9'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt9 --hint-efi=hd0,gpt9 --hint-baremetal=ahci0,gpt9 d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
else
search --no-floppy --fs-uuid --set=root d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
fi
echo 'Loading Linux 3.13.0-29-generic ...'
linux /boot/vmlinuz-3.13.0-29-generic root=UUID=d2f10f36-e3bb-4d83-a9b8-5d456fc454ad ro vga=789 quiet quiet splash $vt_handoff
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-3.13.0-29-generic
}
menuentry 'Ubuntu, with Linux 3.13.0-29-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.13.0-29-generic-recovery-d2f10f36-e3bb-4d83-a9b8-5d456fc454ad' {
recordfail
load_video
insmod gzio
insmod part_gpt
insmod ext2
set root='hd0,gpt9'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt9 --hint-efi=hd0,gpt9 --hint-baremetal=ahci0,gpt9 d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
else
search --no-floppy --fs-uuid --set=root d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
fi
echo 'Loading Linux 3.13.0-29-generic ...'
linux /boot/vmlinuz-3.13.0-29-generic root=UUID=d2f10f36-e3bb-4d83-a9b8-5d456fc454ad ro recovery nomodeset vga=789 quiet
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-3.13.0-29-generic
}
menuentry 'Ubuntu, with Linux 3.13.0-24-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.13.0-24-generic-advanced-d2f10f36-e3bb-4d83-a9b8-5d456fc454ad' {
recordfail
load_video
gfxmode $linux_gfx_mode
insmod gzio
insmod part_gpt
insmod ext2
set root='hd0,gpt9'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt9 --hint-efi=hd0,gpt9 --hint-baremetal=ahci0,gpt9 d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
else
search --no-floppy --fs-uuid --set=root d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
fi
echo 'Loading Linux 3.13.0-24-generic ...'
linux /boot/vmlinuz-3.13.0-24-generic root=UUID=d2f10f36-e3bb-4d83-a9b8-5d456fc454ad ro vga=789 quiet quiet splash $vt_handoff
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-3.13.0-24-generic
}
menuentry 'Ubuntu, with Linux 3.13.0-24-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.13.0-24-generic-recovery-d2f10f36-e3bb-4d83-a9b8-5d456fc454ad' {
recordfail
load_video
insmod gzio
insmod part_gpt
insmod ext2
set root='hd0,gpt9'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt9 --hint-efi=hd0,gpt9 --hint-baremetal=ahci0,gpt9 d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
else
search --no-floppy --fs-uuid --set=root d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
fi
echo 'Loading Linux 3.13.0-24-generic ...'
linux /boot/vmlinuz-3.13.0-24-generic root=UUID=d2f10f36-e3bb-4d83-a9b8-5d456fc454ad ro recovery nomodeset vga=789 quiet
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-3.13.0-24-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_gpt
insmod ext2
set root='hd0,gpt9'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt9 --hint-efi=hd0,gpt9 --hint-baremetal=ahci0,gpt9 d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
else
search --no-floppy --fs-uuid --set=root d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
fi
knetbsd /boot/memtest86+.elf
}
menuentry 'Memory test (memtest86+, serial console 115200)' {
insmod part_gpt
insmod ext2
set root='hd0,gpt9'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt9 --hint-efi=hd0,gpt9 --hint-baremetal=ahci0,gpt9 d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
else
search --no-floppy --fs-uuid --set=root d2f10f36-e3bb-4d83-a9b8-5d456fc454ad
fi
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/sda2)' --class windows --class os $menuentry_id_option 'osprober-chain-7A6A69D66A698FA5' {
insmod part_gpt
insmod ntfs
set root='hd0,gpt2'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt2 --hint-efi=hd0,gpt2 --hint-baremetal=ahci0,gpt2 7A6A69D66A698FA5
else
search --no-floppy --fs-uuid --set=root 7A6A69D66A698FA5
fi
drivemap -s (hd0) ${root}
chainloader +1
}
menuentry 'Windows 8 (loader) (on /dev/sda3)' --class windows --class os $menuentry_id_option 'osprober-chain-8C88-80F7' {
insmod part_gpt
insmod fat
set root='hd0,gpt3'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt3 --hint-efi=hd0,gpt3 --hint-baremetal=ahci0,gpt3 8C88-80F7
else
search --no-floppy --fs-uuid --set=root 8C88-80F7
fi
drivemap -s (hd0) ${root}
chainloader +1
}
set timeout_style=menu
if [ "${timeout}" = 0 ]; then
set timeout=10
fi
### 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/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 $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
john@john-SVE1713Y1EB:~$ ^C
john@john-SVE1713Y1EB:~$ ^C
john@john-SVE1713Y1EB:~$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda9 84G 7.1G 73G 9% /
none 4.0K 0 4.0K 0% /sys/fs/cgroup
udev 3.9G 4.0K 3.9G 1% /dev
tmpfs 794M 1.4M 793M 1% /run
none 5.0M 0 5.0M 0% /run/lock
none 3.9G 80K 3.9G 1% /run/shm
none 100M 52K 100M 1% /run/user
/dev/sdc1 7.5G 2.2G 5.4G 29% /media/john/DYLANMUSIC
/dev/sr0 964M 964M 0 100% /media/john/Ubuntu 14.04 LTS amd64
/dev/sdb1 1.9T 892G 972G 48% /media/john/Storage Main
WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.
Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x4e2ccf75
Device Boot Start End Blocks Id System
/dev/sda1 1 1953525167 976762583+ ee GPT
Partition 1 does not start on physical sector boundary.
Disk /dev/sdc: 8011 MB, 8011120640 bytes
41 heads, 41 sectors/track, 9307 cylinders, total 15646720 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xc3072e18
Device Boot Start End Blocks Id System
/dev/sdc1 8064 15646719 7819328 b W95 FAT32
Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xc7d968ff
Device Boot Start End Blocks Id System
/dev/sdb1 64 3907029119 1953514528 7 HPFS/NTFS/exFAT
major minor #blocks name
8 0 976762584 sda
8 1 266240 sda1
8 2 1509376 sda2
8 3 266240 sda3
8 4 131072 sda4
8 5 841012780 sda5
8 6 358400 sda6
8 7 35376128 sda7
8 8 1024 sda8
8 9 89501696 sda9
8 10 8337408 sda10
11 0 987136 sr0
8 32 7823360 sdc
8 33 7819328 sdc1
8 16 1953514584 sdb
8 17 1953514528 sdb1
我没有手动做任何事情 - 安装程序完成了所有事情（除了将启动更改为 Legacy 以允许启动另一个引导加载程序）。
答案1
解决
猜测无论发生了什么，文件都以某种方式被损坏了，尽管 Live CD 和 USB 在其他计算机上可以工作，但这台笔记本电脑甚至拒绝承认光盘和 USB 已插入，这导致我遇到了可怕的 Grub Recover。
幸运的是，我使用的是 Sony Vaio，它有一个很棒的 ASSIST 按钮。要使用这个按钮，请完全关闭笔记本电脑，然后只需按下 ASSIST 按钮，而不是按电源按钮。这将强制打开 Sony 恢复控制台。
从这里，可以恢复操作系统，检查和修复硬盘以及访问 BIOS......所以我这样做了。
上次访问 BIOS 时，我将启动选项更改为 LEGACY，以便使用 Windows 8 安装另一个操作系统。因此，我将其从 Legacy 改回 UEFI，并仔细检查了启动顺序。然后我保存并重新启动，现在我可以选择操作系统了。
答案2
我的 Windows 系统根本无法在传统模式下启动 - 我相信您需要重新打开 UEFI 才能运行 Windows 8。如果可能的话，有时 UEFI/无安全启动选项对我来说最有效。
我不会直接使用 GRUB，因为grub-customizer它可以处理我需要做的大部分事情，而且由于它在一个简单易用的图形界面中完成这些工作，所以我更喜欢它。它所做的一件事是扫描硬盘以查找要放入启动菜单的备用操作系统。您可以找到获取此程序的说明在 Ubuntu 论坛上