我对 Linux 还很陌生，但过去几天我决定尝试一下。我尝试了几个不同的发行版，只是为了感受一下不同的版本，这是唯一让我感到困惑的事情。
我先从 Windows 7 开始，然后安装了 Ubuntu 13.10（运行完美），然后安装了 Linux Mint。但是，我没有办法启动 Linux Mint，而这正是我想要实现的。我的目标是在启动时出现的 Grub2 菜单上有一个 Linux Mint 菜单项，与 Ubuntu 和 Windows 7 菜单项一起使用（还有一些我尚未使用过的菜单项，如高级 Ubuntu 选项子菜单和内存测试菜单项）。
如果需要任何此类信息，以下是来自 GParted 分区表的一些信息以及部分输出bootinfoscript：
来自 GParted 的分区信息和描述：
/dev/sda1是一个 101.94 MiB 主分区，采用 fat16 文件系统，带有“diag”标志/dev/sda2是一个 11.29 GiB 的主分区，采用 ntfs 文件系统，带有“启动”标志和“恢复”标签。根据/boot/grub/grub.cfg，这是 Windows 7 加载程序所在的位置。我从当前的 Grub2 菜单启动 Windows 7 没有任何问题。/dev/sda3是一个 275.12 GiB 的主分区，带有 ntfs 文件系统，标签为“OS”。此分区保存了我最初在 Windows 上创建的所有文件，尽管有些文件已使用 Ubuntu 程序保存（到目前为止，跨操作系统编辑文件没有出现任何问题，但如果出于某种原因出现问题，请告诉我）。/dev/sda4是一个 171.01 GiB 的扩展分区。此分区当前已挂载。它包含交换分区，以及 Ubuntu 13.10 和 Linux Mint 16 的逻辑分区：/dev/sda5是一个 58.79 GiB 的逻辑分区，具有 ext4 文件系统，其中包含 Linux Mint 16 的安装。在 GParted 中，它显示此文件系统的挂载点是/。这是唯一具有非空挂载点条目的分区。我不知道该怎么做，而且我目前也不知道如何启动当前所在的 Linux Mint 16。/dev/sda6是一个 19.56 GiB 分区（我相信它被认为是主分区？），带有“linux-swap”文件系统。这是我在安装 Ubuntu 时自动创建的，但在尝试安装 Linux Mint 16 时遇到一些问题时，我手动将其大小增加了约 10 GB。据我所知，Linux Mint 16 目前已成功安装，但我不知道如何像我之前所说的那样启动它。此分区当前已安装。/dev/sda7是一个 36.41 GiB 的逻辑分区，文件系统为 ext4，其中包含 Ubuntu 13.10。Ubuntu 13.10 运行良好，我目前就是在它上面写这个问题的。此分区当前已挂载。
这是bootinfoscript输出（它很长，包括文件grub.cfg以及sudo fdisk -l已经发布在这里的信息 - 但是由于字符限制，有些信息必须省略）：
Boot Info Script 0.61 [1 April 2012]
============================= 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
in partition 94 for .
=> Syslinux MBR (4.04 and higher) is installed in the MBR of /dev/sdb.
sda1: __________________________________________________________________________
File system: vfat
Boot sector type: Dell Utility: FAT16
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files: /DELLBIO.BIN /DELLRMK.BIN /COMMAND.COM
sda2: __________________________________________________________________________
File system: ntfs
Boot sector type: Windows Vista/7: NTFS
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files: /bootmgr /Boot/BCD
sda3: __________________________________________________________________________
File system: ntfs
Boot sector type: Windows Vista/7: NTFS
Boot sector info: No errors found in the Boot Parameter Block.
Operating System: Windows 7
Boot files: /Windows/System32/winload.exe /ubuntu/winboot/wubildr
/ubuntu/winboot/wubildr.mbr
sda4: __________________________________________________________________________
File system: Extended Partition
Boot sector type: -
Boot sector info:
sda5: __________________________________________________________________________
File system: ext4
Boot sector type: -
Boot sector info:
Operating System: Ubuntu 13.10
Boot files: /boot/grub/grub.cfg /etc/fstab
sda6: __________________________________________________________________________
File system: swap
Boot sector type: -
Boot sector info:
sda7: __________________________________________________________________________
File system: ext4
Boot sector type: Grub2 (v1.99)
Boot sector info: Grub2 (v1.99) is installed in the boot sector of sda7
and looks at sector 648107560 of the same hard drive
for core.img. core.img is at this location and looks
in partition 94 for .
Operating System: Linux Mint 16 Petra
Boot files: /boot/grub/grub.cfg /etc/fstab
============================ Drive/Partition Info: =============================
Drive: sda _____________________________________________________________________
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
Partition Boot Start Sector End Sector # of Sectors Id System
/dev/sda1 63 208,844 208,782 de Dell Utility
/dev/sda2 * 212,992 41,172,991 40,960,000 7 NTFS / exFAT / HPFS
/dev/sda3 41,172,992 618,134,175 576,961,184 7 NTFS / exFAT / HPFS
/dev/sda4 618,139,646 976,771,071 358,631,426 5 Extended
/dev/sda5 694,501,376 817,790,975 123,289,600 83 Linux
/dev/sda6 935,753,728 976,771,071 41,017,344 82 Linux swap / Solaris
/dev/sda7 618,139,648 694,499,022 76,359,375 83 Linux
"blkid" output: ________________________________________________________________
Device UUID TYPE LABEL
/dev/sda1 3030-3030 vfat DellUtility
/dev/sda2 76C2AD13C2ACD89F ntfs RECOVERY
/dev/sda3 B864AE8864AE4948 ntfs OS
/dev/sda5 5832ede3-f357-427e-ac67-b2157b5ba6e1 ext4
/dev/sda6 24a1b8d2-d3a0-4b3f-b48e-9a3f5bab16c2 swap
/dev/sda7 520dfeb8-758e-47c0-97de-a0a8cb8b4866 ext4
================================ Mount points: =================================
Device Mount_Point Type Options
/dev/sda3 /media/matt/OS fuseblk (rw,nosuid,nodev,allow_other,default_permissions,blksize=4096)
/dev/sda5 / ext4 (rw,errors=remount-ro)
/dev/sda7 /media/matt/520dfeb8-758e-47c0-97de-a0a8cb8b4866 ext4 (rw,nosuid,nodev,uhelper=udisks2)
=========================== sda5/boot/grub/grub.cfg: ===========================
Bootinfoscript
--------------------------------------------------------------------------------
#
# DO NOT EDIT THIS FILE
#
### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
set have_grubenv=true
load_env
fi
set default="0"
if [ x"${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_msdos
insmod ext2
set root='hd0,msdos5'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos5 --hint-efi=hd0,msdos5 --hint-baremetal=ahci0,msdos5 5832ede3-f357-427e-ac67-b2157b5ba6e1
else
search --no-floppy --fs-uuid --set=root 5832ede3-f357-427e-ac67-b2157b5ba6e1
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 [ "${recordfail}" = 1 ]; then
set timeout=-1
else
set timeout=10
fi
### END /etc/grub.d/00_header ###
/\/\/\/\/\ EDITED OUT MORE THEME INFO /\/\/\/\/\/\
### BEGIN /etc/grub.d/10_linux ###
function gfxmode {
set gfxpayload="${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-5832ede3-f357-427e-ac67-b2157b5ba6e1' {
recordfail
load_video
gfxmode $linux_gfx_mode
insmod gzio
insmod part_msdos
insmod ext2
set root='hd0,msdos5'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos5 --hint-efi=hd0,msdos5 --hint-baremetal=ahci0,msdos5 5832ede3-f357-427e-ac67-b2157b5ba6e1
else
search --no-floppy --fs-uuid --set=root 5832ede3-f357-427e-ac67-b2157b5ba6e1
fi
linux /boot/vmlinuz-3.11.0-15-generic root=UUID=5832ede3-f357-427e-ac67-b2157b5ba6e1 ro acpi_backlight=vendor dell_laptop.backlight=0 quiet splash $vt_handoff
initrd /boot/initrd.img-3.11.0-15-generic
}
/\/\/\/\/\/\/\/ I MANUALLY OMITTED THE UBUNTU ADVANCED OPTIONS SUBMENU FROM HERE BECAUSE THERE Was >30000 CHARACTERS /\/\/\/\/\/\/
--class gnu --class os $menuentry_id_option 'gnulinux-3.8.0-35-generic-advanced-5832ede3-f357-427e-ac67-b2157b5ba6e1' {
recordfail
load_video
gfxmode $linux_gfx_mode
insmod gzio
insmod part_msdos
insmod ext2
set root='hd0,msdos5'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos5 --hint-efi=hd0,msdos5 --hint-baremetal=ahci0,msdos5 5832ede3-f357-427e-ac67-b2157b5ba6e1
else
search --no-floppy --fs-uuid --set=root 5832ede3-f357-427e-ac67-b2157b5ba6e1
fi
echo 'Loading Linux 3.8.0-35-generic ...'
linux /boot/vmlinuz-3.8.0-35-generic root=UUID=5832ede3-f357-427e-ac67-b2157b5ba6e1 ro acpi_backlight=vendor dell_laptop.backlight=0 quiet splash $vt_handoff
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-3.8.0-35-generic
}
menuentry 'Ubuntu, with Linux 3.8.0-35-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.8.0-35-generic-recovery-5832ede3-f357-427e-ac67-b2157b5ba6e1' {
recordfail
load_video
insmod gzio
insmod part_msdos
insmod ext2
set root='hd0,msdos5'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos5 --hint-efi=hd0,msdos5 --hint-baremetal=ahci0,msdos5 5832ede3-f357-427e-ac67-b2157b5ba6e1
else
search --no-floppy --fs-uuid --set=root 5832ede3-f357-427e-ac67-b2157b5ba6e1
fi
echo 'Loading Linux 3.8.0-35-generic ...'
linux /boot/vmlinuz-3.8.0-35-generic root=UUID=5832ede3-f357-427e-ac67-b2157b5ba6e1 ro recovery nomodeset
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-3.8.0-35-generic
}
menuentry 'Ubuntu, with Linux 3.8.0-19-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.8.0-19-generic-advanced-5832ede3-f357-427e-ac67-b2157b5ba6e1' {
recordfail
load_video
gfxmode $linux_gfx_mode
insmod gzio
insmod part_msdos
insmod ext2
set root='hd0,msdos5'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos5 --hint-efi=hd0,msdos5 --hint-baremetal=ahci0,msdos5 5832ede3-f357-427e-ac67-b2157b5ba6e1
else
search --no-floppy --fs-uuid --set=root 5832ede3-f357-427e-ac67-b2157b5ba6e1
fi
echo 'Loading Linux 3.8.0-19-generic ...'
linux /boot/vmlinuz-3.8.0-19-generic root=UUID=5832ede3-f357-427e-ac67-b2157b5ba6e1 ro acpi_backlight=vendor dell_laptop.backlight=0 quiet splash $vt_handoff
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-3.8.0-19-generic
}
menuentry 'Ubuntu, with Linux 3.8.0-19-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.8.0-19-generic-recovery-5832ede3-f357-427e-ac67-b2157b5ba6e1' {
recordfail
load_video
insmod gzio
insmod part_msdos
insmod ext2
set root='hd0,msdos5'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos5 --hint-efi=hd0,msdos5 --hint-baremetal=ahci0,msdos5 5832ede3-f357-427e-ac67-b2157b5ba6e1
else
search --no-floppy --fs-uuid --set=root 5832ede3-f357-427e-ac67-b2157b5ba6e1
fi
echo 'Loading Linux 3.8.0-19-generic ...'
linux /boot/vmlinuz-3.8.0-19-generic root=UUID=5832ede3-f357-427e-ac67-b2157b5ba6e1 ro recovery nomodeset
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-3.8.0-19-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='hd0,msdos5'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos5 --hint-efi=hd0,msdos5 --hint-baremetal=ahci0,msdos5 5832ede3-f357-427e-ac67-b2157b5ba6e1
else
search --no-floppy --fs-uuid --set=root 5832ede3-f357-427e-ac67-b2157b5ba6e1
fi
linux16 /boot/memtest86+.bin
}
menuentry 'Memory test (memtest86+, serial console 115200)' {
insmod part_msdos
insmod ext2
set root='hd0,msdos5'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos5 --hint-efi=hd0,msdos5 --hint-baremetal=ahci0,msdos5 5832ede3-f357-427e-ac67-b2157b5ba6e1
else
search --no-floppy --fs-uuid --set=root 5832ede3-f357-427e-ac67-b2157b5ba6e1
fi
linux16 /boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###
### BEGIN /etc/grub.d/30_os-prober ###
menuentry 'Windows 7 (loader) (on /dev/sda2)' --class windows --class os $menuentry_id_option 'osprober-chain-76C2AD13C2ACD89F' {
insmod part_msdos
insmod ntfs
set root='hd0,msdos2'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos2 --hint-efi=hd0,msdos2 --hint-baremetal=ahci0,msdos2 76C2AD13C2ACD89F
else
search --no-floppy --fs-uuid --set=root 76C2AD13C2ACD89F
fi
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/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 ###
--------------------------------------------------------------------------------
=============================== sda5/etc/fstab: ================================
--------------------------------------------------------------------------------
# /etc/fstab: static file system information.
#
# Use 'blkid' 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>
# / was on /dev/sdb5 during installation
UUID=5832ede3-f357-427e-ac67-b2157b5ba6e1 / ext4 errors=remount-ro 0 1
# swap was on /dev/sdb6 during installation
UUID=24a1b8d2-d3a0-4b3f-b48e-9a3f5bab16c2 none swap sw 0 0
--------------------------------------------------------------------------------
=========================== sda7/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 $prefix/grubenv ]; then
set have_grubenv=true
load_env
fi
set default="0"
if [ x"${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_msdos
insmod ext2
set root='hd0,msdos7'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos7 --hint-efi=hd0,msdos7 --hint-baremetal=ahci0,msdos7 520dfeb8-758e-47c0-97de-a0a8cb8b4866
else
search --no-floppy --fs-uuid --set=root 520dfeb8-758e-47c0-97de-a0a8cb8b4866
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=-1
else
set timeout=10
fi
### END /etc/grub.d/00_header ###
/\/\/\/\/\/\/ EDITED OUT SOME DEBIAN/MINT THEME INFO HERE /\/\/\/\/\/\/\
### 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 [ ${match} = 0 ]; then
set linux_gfx_mode=keep
else
set linux_gfx_mode=text
fi
else
set linux_gfx_mode=text
fi
else
set linux_gfx_mode=keep
fi
else
set linux_gfx_mode=text
fi
export linux_gfx_mode
if [ "$linux_gfx_mode" != "text" ]; then load_video; fi
menuentry 'Linux Mint 16 Cinnamon 64-bit, 3.11.0-12-generic (/dev/sda7)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
gfxmode $linux_gfx_mode
insmod gzio
insmod part_msdos
insmod ext2
set root='hd0,msdos7'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos7 --hint-efi=hd0,msdos7 --hint-baremetal=ahci0,msdos7 520dfeb8-758e-47c0-97de-a0a8cb8b4866
else
search --no-floppy --fs-uuid --set=root 520dfeb8-758e-47c0-97de-a0a8cb8b4866
fi
linux /boot/vmlinuz-3.11.0-12-generic root=UUID=520dfeb8-758e-47c0-97de-a0a8cb8b4866 ro quiet splash $vt_handoff
initrd /boot/initrd.img-3.11.0-12-generic
}
menuentry 'Linux Mint 16 Cinnamon 64-bit, 3.11.0-12-generic (/dev/sda7) -- recovery mode' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod gzio
insmod part_msdos
insmod ext2
set root='hd0,msdos7'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos7 --hint-efi=hd0,msdos7 --hint-baremetal=ahci0,msdos7 520dfeb8-758e-47c0-97de-a0a8cb8b4866
else
search --no-floppy --fs-uuid --set=root 520dfeb8-758e-47c0-97de-a0a8cb8b4866
fi
echo 'Loading Linux 3.11.0-12-generic ...'
linux /boot/vmlinuz-3.11.0-12-generic root=UUID=520dfeb8-758e-47c0-97de-a0a8cb8b4866 ro recovery nomodeset
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-3.11.0-12-generic
}
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/10_lupin ###
### END /etc/grub.d/10_lupin ###
### 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='hd0,msdos7'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos7 --hint-efi=hd0,msdos7 --hint-baremetal=ahci0,msdos7 520dfeb8-758e-47c0-97de-a0a8cb8b4866
else
search --no-floppy --fs-uuid --set=root 520dfeb8-758e-47c0-97de-a0a8cb8b4866
fi
linux16 /boot/memtest86+.bin
}
menuentry 'Memory test (memtest86+, serial console 115200)' {
insmod part_msdos
insmod ext2
set root='hd0,msdos7'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos7 --hint-efi=hd0,msdos7 --hint-baremetal=ahci0,msdos7 520dfeb8-758e-47c0-97de-a0a8cb8b4866
else
search --no-floppy --fs-uuid --set=root 520dfeb8-758e-47c0-97de-a0a8cb8b4866
fi
linux16 /boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###
### BEGIN /etc/grub.d/30_os-prober ###
menuentry 'Windows 7 (loader) (on /dev/sda2)' --class windows --class os $menuentry_id_option 'osprober-chain-76C2AD13C2ACD89F' {
insmod part_msdos
insmod ntfs
set root='hd0,msdos2'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos2 --hint-efi=hd0,msdos2 --hint-baremetal=ahci0,msdos2 76C2AD13C2ACD89F
else
search --no-floppy --fs-uuid --set=root 76C2AD13C2ACD89F
fi
chainloader +1
}
menuentry 'Ubuntu 13.10 (13.10)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-simple-5832ede3-f357-427e-ac67-b2157b5ba6e1' {
insmod part_msdos
insmod ext2
set root='hd0,msdos5'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos5 --hint-efi=hd0,msdos5 --hint-baremetal=ahci0,msdos5 5832ede3-f357-427e-ac67-b2157b5ba6e1
else
search --no-floppy --fs-uuid --set=root 5832ede3-f357-427e-ac67-b2157b5ba6e1
fi
linux /boot/vmlinuz-3.11.0-15-generic root=UUID=5832ede3-f357-427e-ac67-b2157b5ba6e1 ro acpi_backlight=vendor dell_laptop.backlight=0 quiet splash $vt_handoff
initrd /boot/initrd.img-3.11.0-15-generic
}
/\/\/\/\/\/\/ THERE WAS ANOTHER SUBMENU THING FOR UBUNTU ADVANCED OPTIONS HERE, ALSO OMITTED /\/\/\/\/\/\/\/\
### 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 ###
--------------------------------------------------------------------------------
=============================== sda7/etc/fstab: ================================
--------------------------------------------------------------------------------
# /etc/fstab: static file system information.
#
# Use 'blkid' 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>
# / was on /dev/sda7 during installation
UUID=520dfeb8-758e-47c0-97de-a0a8cb8b4866 / ext4 errors=remount-ro 0 1
# swap was on /dev/sda6 during installation
UUID=24a1b8d2-d3a0-4b3f-b48e-9a3f5bab16c2 none swap sw 0 0
--------------------------------------------------------------------------------
我不确定这个分区设置是否好，因为我无法创建额外的主分区（最多 4 个），但我想既然 Ubuntu 可以从扩展分区内启动，那么 Linux Mint 也应该可以，所以我将 Linux Mint 添加到与 Ubuntu 位于同一扩展分区（在/dev/sda5）的分区中，但在它自己的逻辑分区中/dev/sda7。
文件中/boot/grub/grub.cfg有几个menuentry单元。如果从 Grub2 菜单启动 Linux Mint 的正确方法是为 Linux Mint 添加菜单项块，那么我想知道该怎么做。如果有更好的方法让每个操作系统都有一个在启动时启动的选项，也请告诉我！
我看到了一个类似的问题这里但情况似乎有点不同，因为该用户的同一个扩展分区内没有包含两个操作系统分区，而且我不想只是在黑暗中射击并可能意外破坏一些重要的东西。
如果需要我未在此处提供的更多信息，我会密切关注，因此请立即告诉我，我会尽力为您提供所需的任何信息。
非常感谢您的帮助！
答案1
您可以尝试update-grub看看它是否能检测到 Linux Mint。这应该会检查安装了哪些操作系统。
或者，您可以尝试从 Live USB（或 LiveCD）启动并grub-install /dev/sda在安装硬盘的情况下运行。这将重新安装 GRUB 并再次检查其他操作系统。