System-Installation
為什麼 GRUB 在我的多重引導配置中引導 Debian 32 位而不是 Ubuntu 64 位？
我在我的系統上安裝了 Ubuntu GNOME Remix 64-bis。我將安裝程序設置為重用我的
/boot和/home. 由於 ubiquity（Ubuntu 安裝程序）讓我很難安裝 GRUB，所以我選擇“在沒有引導載入程序的情況下繼續”，並且由於我/boot以前安裝/安裝了/boot我只需update-grub要從 Debian 32 位做，問題就解決了……聽起來很容易，但事實並非如此。該update-grub命令在我的另一個 HD 中檢測到 Ubuntu：sudo update-grub2 [sudo] password for braiam: Generating grub.cfg ... Found background image: /usr/share/images/desktop-base/desktop-grub.png Found linux image: /boot/vmlinuz-3.10-2-686-pae Found initrd image: /boot/initrd.img-3.10-2-686-pae Found linux image: /boot/vmlinuz-3.8.0-19-generic Found initrd image: /boot/initrd.img-3.8.0-19-generic Found memtest86+ image: /memtest86+.bin Found memtest86+ multiboot image: /memtest86+_multiboot.bin Found Ubuntu 13.04 (13.04) on /dev/sda1 Found Windows 7 (loader) on /dev/sdb1 done但是當我選擇“Ubuntu 13.04”時，它會啟動到 Debian。我檢查了 grub.cfg 條目，發現
root和UUID值設置為與 Debian 相同。sudo grub-mkconfig Generating 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 $prefix/grubenv ]; then load_env fi set default="0" if [ x"${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 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=hd1,msdos7 --hint-efi=hd1,msdos7 --hint-baremetal=ahci1,msdos7 --hint='hd0,msdos7' cead26d6-08f4-4894-ac78-a9a4ce59f773 else search --no-floppy --fs-uuid --set=root cead26d6-08f4-4894-ac78-a9a4ce59f773 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 set timeout=5 ### END /etc/grub.d/00_header ### ### BEGIN /etc/grub.d/05_debian_theme ### insmod part_msdos insmod ext2 set root='hd0,msdos8' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos8 --hint-efi=hd1,msdos8 --hint-baremetal=ahci1,msdos8 --hint='hd0,msdos8' 0cef2d59-21ca-4ba2-a9b2-0b9ef1f42589 else search --no-floppy --fs-uuid --set=root 0cef2d59-21ca-4ba2-a9b2-0b9ef1f42589 fi Found background image: /usr/share/images/desktop-base/desktop-grub.png insmod png if background_image /braiam/.cache/gnome-control-center/backgrounds/14fb12e1345ca2dfd3807e7f7b1122b0d6015d9453ed5742de72b988a9cffded; 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/10_linux ### Found linux image: /boot/vmlinuz-3.10-2-686-pae Found initrd image: /boot/initrd.img-3.10-2-686-pae menuentry 'Debian GNU/Linux' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-cead26d6-08f4-4894-ac78-a9a4ce59f773' { load_video insmod gzio insmod part_msdos insmod ext2 set root='hd0,msdos5' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos5 --hint-efi=hd1,msdos5 --hint-baremetal=ahci1,msdos5 --hint='hd0,msdos5' 279a18da-130b-46dd-8b54-84da48eb445f else search --no-floppy --fs-uuid --set=root 279a18da-130b-46dd-8b54-84da48eb445f fi echo 'Loading Linux 3.10-2-686-pae ...' linux /vmlinuz-3.10-2-686-pae root=UUID=cead26d6-08f4-4894-ac78-a9a4ce59f773 ro initrd=/install/initrd.gz quiet radeon.hw_i2c=1 echo 'Loading initial ramdisk ...' initrd /initrd.img-3.10-2-686-pae } submenu 'Advanced options for Debian GNU/Linux' $menuentry_id_option 'gnulinux-advanced-cead26d6-08f4-4894-ac78-a9a4ce59f773' { menuentry 'Debian GNU/Linux, with Linux 3.10-2-686-pae' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.10-2-686-pae-advanced-cead26d6-08f4-4894-ac78-a9a4ce59f773' { load_video insmod gzio insmod part_msdos insmod ext2 set root='hd0,msdos5' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos5 --hint-efi=hd1,msdos5 --hint-baremetal=ahci1,msdos5 --hint='hd0,msdos5' 279a18da-130b-46dd-8b54-84da48eb445f else search --no-floppy --fs-uuid --set=root 279a18da-130b-46dd-8b54-84da48eb445f fi echo 'Loading Linux 3.10-2-686-pae ...' linux /vmlinuz-3.10-2-686-pae root=UUID=cead26d6-08f4-4894-ac78-a9a4ce59f773 ro initrd=/install/initrd.gz quiet radeon.hw_i2c=1 echo 'Loading initial ramdisk ...' initrd /initrd.img-3.10-2-686-pae } menuentry 'Debian GNU/Linux, with Linux 3.10-2-686-pae (recovery mode)' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.10-2-686-pae-recovery-cead26d6-08f4-4894-ac78-a9a4ce59f773' { load_video insmod gzio insmod part_msdos insmod ext2 set root='hd0,msdos5' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos5 --hint-efi=hd1,msdos5 --hint-baremetal=ahci1,msdos5 --hint='hd0,msdos5' 279a18da-130b-46dd-8b54-84da48eb445f else search --no-floppy --fs-uuid --set=root 279a18da-130b-46dd-8b54-84da48eb445f fi echo 'Loading Linux 3.10-2-686-pae ...' linux /vmlinuz-3.10-2-686-pae root=UUID=cead26d6-08f4-4894-ac78-a9a4ce59f773 ro single initrd=/install/initrd.gz echo 'Loading initial ramdisk ...' initrd /initrd.img-3.10-2-686-pae } Found linux image: /boot/vmlinuz-3.8.0-19-generic Found initrd image: /boot/initrd.img-3.8.0-19-generic menuentry 'Debian GNU/Linux, with Linux 3.8.0-19-generic' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.8.0-19-generic-advanced-cead26d6-08f4-4894-ac78-a9a4ce59f773' { load_video insmod gzio insmod part_msdos insmod ext2 set root='hd0,msdos5' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos5 --hint-efi=hd1,msdos5 --hint-baremetal=ahci1,msdos5 --hint='hd0,msdos5' 279a18da-130b-46dd-8b54-84da48eb445f else search --no-floppy --fs-uuid --set=root 279a18da-130b-46dd-8b54-84da48eb445f fi echo 'Loading Linux 3.8.0-19-generic ...' linux /vmlinuz-3.8.0-19-generic root=UUID=cead26d6-08f4-4894-ac78-a9a4ce59f773 ro initrd=/install/initrd.gz quiet radeon.hw_i2c=1 echo 'Loading initial ramdisk ...' initrd /initrd.img-3.8.0-19-generic } menuentry 'Debian GNU/Linux, with Linux 3.8.0-19-generic (recovery mode)' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.8.0-19-generic-recovery-cead26d6-08f4-4894-ac78-a9a4ce59f773' { load_video insmod gzio insmod part_msdos insmod ext2 set root='hd0,msdos5' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos5 --hint-efi=hd1,msdos5 --hint-baremetal=ahci1,msdos5 --hint='hd0,msdos5' 279a18da-130b-46dd-8b54-84da48eb445f else search --no-floppy --fs-uuid --set=root 279a18da-130b-46dd-8b54-84da48eb445f fi echo 'Loading Linux 3.8.0-19-generic ...' linux /vmlinuz-3.8.0-19-generic root=UUID=cead26d6-08f4-4894-ac78-a9a4ce59f773 ro single initrd=/install/initrd.gz echo 'Loading initial ramdisk ...' initrd /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+ ### Found memtest86+ image: /memtest86+.bin menuentry "Memory test (memtest86+)" { insmod part_msdos insmod ext2 set root='hd0,msdos5' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos5 --hint-efi=hd1,msdos5 --hint-baremetal=ahci1,msdos5 --hint='hd0,msdos5' 279a18da-130b-46dd-8b54-84da48eb445f else search --no-floppy --fs-uuid --set=root 279a18da-130b-46dd-8b54-84da48eb445f fi linux16 /memtest86+.bin } menuentry "Memory test (memtest86+, serial console 115200)" { insmod part_msdos insmod ext2 set root='hd0,msdos5' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos5 --hint-efi=hd1,msdos5 --hint-baremetal=ahci1,msdos5 --hint='hd0,msdos5' 279a18da-130b-46dd-8b54-84da48eb445f else search --no-floppy --fs-uuid --set=root 279a18da-130b-46dd-8b54-84da48eb445f fi linux16 /memtest86+.bin console=ttyS0,115200n8 } Found memtest86+ multiboot image: /memtest86+_multiboot.bin menuentry "Memory test (memtest86+, experimental multiboot)" { insmod part_msdos insmod ext2 set root='hd0,msdos5' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos5 --hint-efi=hd1,msdos5 --hint-baremetal=ahci1,msdos5 --hint='hd0,msdos5' 279a18da-130b-46dd-8b54-84da48eb445f else search --no-floppy --fs-uuid --set=root 279a18da-130b-46dd-8b54-84da48eb445f fi multiboot /memtest86+_multiboot.bin } menuentry "Memory test (memtest86+, serial console 115200, experimental multiboot)" { insmod part_msdos insmod ext2 set root='hd0,msdos5' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos5 --hint-efi=hd1,msdos5 --hint-baremetal=ahci1,msdos5 --hint='hd0,msdos5' 279a18da-130b-46dd-8b54-84da48eb445f else search --no-floppy --fs-uuid --set=root 279a18da-130b-46dd-8b54-84da48eb445f fi multiboot /memtest86+_multiboot.bin console=ttyS0,115200n8 } ### END /etc/grub.d/20_memtest86+ ### ### BEGIN /etc/grub.d/30_os-prober ### Found Ubuntu 13.04 (13.04) on /dev/sda1 menuentry 'Ubuntu 13.04 (13.04)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-simple-bf554a2f-a035-4c22-bca8-162def35a03c' { insmod part_msdos insmod ext2 set root='hd0,msdos5' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos5 --hint-efi=hd1,msdos5 --hint-baremetal=ahci1,msdos5 --hint='hd0,msdos5' 279a18da-130b-46dd-8b54-84da48eb445f else search --no-floppy --fs-uuid --set=root 279a18da-130b-46dd-8b54-84da48eb445f fi linux /vmlinuz-3.10-2-686-pae root=UUID=cead26d6-08f4-4894-ac78-a9a4ce59f773 ro initrd=/install/initrd.gz quiet radeon.hw_i2c=1 initrd /initrd.img-3.10-2-686-pae } submenu 'Advanced options for Ubuntu 13.04 (13.04)' $menuentry_id_option 'osprober-gnulinux-advanced-bf554a2f-a035-4c22-bca8-162def35a03c' { menuentry 'Debian GNU/Linux (on /dev/sda1)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/vmlinuz-3.10-2-686-pae--bf554a2f-a035-4c22-bca8-162def35a03c' { insmod part_msdos insmod ext2 set root='hd0,msdos5' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos5 --hint-efi=hd1,msdos5 --hint-baremetal=ahci1,msdos5 --hint='hd0,msdos5' 279a18da-130b-46dd-8b54-84da48eb445f else search --no-floppy --fs-uuid --set=root 279a18da-130b-46dd-8b54-84da48eb445f fi linux /vmlinuz-3.10-2-686-pae root=UUID=cead26d6-08f4-4894-ac78-a9a4ce59f773 ro initrd=/install/initrd.gz quiet radeon.hw_i2c=1 initrd /initrd.img-3.10-2-686-pae } menuentry 'Debian GNU/Linux, with Linux 3.10-2-686-pae (on /dev/sda1)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/vmlinuz-3.10-2-686-pae--bf554a2f-a035-4c22-bca8-162def35a03c' { insmod part_msdos insmod ext2 set root='hd0,msdos5' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos5 --hint-efi=hd1,msdos5 --hint-baremetal=ahci1,msdos5 --hint='hd0,msdos5' 279a18da-130b-46dd-8b54-84da48eb445f else search --no-floppy --fs-uuid --set=root 279a18da-130b-46dd-8b54-84da48eb445f fi linux /vmlinuz-3.10-2-686-pae root=UUID=cead26d6-08f4-4894-ac78-a9a4ce59f773 ro initrd=/install/initrd.gz quiet radeon.hw_i2c=1 initrd /initrd.img-3.10-2-686-pae } menuentry 'Debian GNU/Linux, with Linux 3.10-2-686-pae (recovery mode) (on /dev/sda1)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/vmlinuz-3.10-2-686-pae-root=UUID=cead26d6-08f4-4894-ac78-a9a4ce59f773 ro single initrd=/install/initrd.gz-bf554a2f-a035-4c22-bca8-162def35a03c' { insmod part_msdos insmod ext2 set root='hd0,msdos5' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos5 --hint-efi=hd1,msdos5 --hint-baremetal=ahci1,msdos5 --hint='hd0,msdos5' 279a18da-130b-46dd-8b54-84da48eb445f else search --no-floppy --fs-uuid --set=root 279a18da-130b-46dd-8b54-84da48eb445f fi linux /vmlinuz-3.10-2-686-pae root=UUID=cead26d6-08f4-4894-ac78-a9a4ce59f773 ro single initrd=/install/initrd.gz initrd /initrd.img-3.10-2-686-pae } menuentry 'Debian GNU/Linux, with Linux 3.8.0-19-generic (on /dev/sda1)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/vmlinuz-3.8.0-19-generic--bf554a2f-a035-4c22-bca8-162def35a03c' { insmod part_msdos insmod ext2 set root='hd0,msdos5' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos5 --hint-efi=hd1,msdos5 --hint-baremetal=ahci1,msdos5 --hint='hd0,msdos5' 279a18da-130b-46dd-8b54-84da48eb445f else search --no-floppy --fs-uuid --set=root 279a18da-130b-46dd-8b54-84da48eb445f fi linux /vmlinuz-3.8.0-19-generic root=UUID=cead26d6-08f4-4894-ac78-a9a4ce59f773 ro initrd=/install/initrd.gz quiet radeon.hw_i2c=1 initrd /initrd.img-3.8.0-19-generic } menuentry 'Debian GNU/Linux, with Linux 3.8.0-19-generic (recovery mode) (on /dev/sda1)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/vmlinuz-3.8.0-19-generic-root=UUID=cead26d6-08f4-4894-ac78-a9a4ce59f773 ro single initrd=/install/initrd.gz-bf554a2f-a035-4c22-bca8-162def35a03c' { insmod part_msdos insmod ext2 set root='hd0,msdos5' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos5 --hint-efi=hd1,msdos5 --hint-baremetal=ahci1,msdos5 --hint='hd0,msdos5' 279a18da-130b-46dd-8b54-84da48eb445f else search --no-floppy --fs-uuid --set=root 279a18da-130b-46dd-8b54-84da48eb445f fi linux /vmlinuz-3.8.0-19-generic root=UUID=cead26d6-08f4-4894-ac78-a9a4ce59f773 ro single initrd=/install/initrd.gz initrd /initrd.img-3.8.0-19-generic } menuentry 'Ubuntu 13.04 (13.04) (on /dev/sda1)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/vmlinuz-3.10-2-686-pae--bf554a2f-a035-4c22-bca8-162def35a03c' { insmod part_msdos insmod ext2 set root='hd0,msdos5' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos5 --hint-efi=hd1,msdos5 --hint-baremetal=ahci1,msdos5 --hint='hd0,msdos5' 279a18da-130b-46dd-8b54-84da48eb445f else search --no-floppy --fs-uuid --set=root 279a18da-130b-46dd-8b54-84da48eb445f fi linux /vmlinuz-3.10-2-686-pae root=UUID=cead26d6-08f4-4894-ac78-a9a4ce59f773 ro initrd=/install/initrd.gz quiet radeon.hw_i2c=1 initrd /initrd.img-3.10-2-686-pae } } Found Windows 7 (loader) on /dev/sdb1 menuentry 'Windows 7 (loader) (on /dev/sdb1)' --class windows --class os $menuentry_id_option 'osprober-chain-AA64B45A64B42AC9' { insmod part_msdos insmod ntfs set root='hd0,msdos1' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos1 --hint-efi=hd1,msdos1 --hint-baremetal=ahci1,msdos1 --hint='hd0,msdos1' AA64B45A64B42AC9 else search --no-floppy --fs-uuid --set=root AA64B45A64B42AC9 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 ### done我可以編輯手頭的條目，但是 grub.cfg 一開始就有的“不要編輯這個文件”讓我退縮了。我應該手動編輯這些條目，創建自定義腳本，還是我注定要失敗？
ls /boot主盤：ls /boot/ abi-3.8.0-19-generic initrd.img-3.8.0-19-generic System.map-3.8.0-19-generic config-3.10-2-686-pae iso vmlinuz-3.10-2-686-pae config-3.8.0-19-generic lost+found vmlinuz-3.8.0-19-generic extlinux memtest86+.bin vmlinuz-3.8.0-19-generic.efi.signed grub memtest86+_multiboot.bin initrd.img-3.10-2-686-pae System.map-3.10-2-686-pae
ls /boot我安裝 Ubuntu 的磁碟：ls /media/braiam/bf554a2f-a035-4c22-bca8-162def35a03c/boot/ grub initrd.img-3.8.0-19-generic.new
blkidblkid /dev/sda1: UUID="bf554a2f-a035-4c22-bca8-162def35a03c" TYPE="ext4" #here Ubuntu /dev/sda2: UUID="7cb917ba-babb-42cd-897e-2070d540eda4" TYPE="swap" /dev/sdb1: UUID="AA64B45A64B42AC9" TYPE="ntfs" /dev/sdb2: UUID="F66E431C6E42D551" TYPE="ntfs" /dev/sdb3: UUID="75a0854b-8b6b-453f-8aec-2a081a1f19e3" TYPE="swap" /dev/sdb5: UUID="279a18da-130b-46dd-8b54-84da48eb445f" TYPE="ext4" #Here boot /dev/sdb6: UUID="393cd35e-b827-4dea-acb5-2a66f2369dce" TYPE="swap" /dev/sdb7: UUID="cead26d6-08f4-4894-ac78-a9a4ce59f773" TYPE="ext4" #here Debian /dev/sdb8: UUID="0cef2d59-21ca-4ba2-a9b2-0b9ef1f42589" TYPE="ext4"
fdisk -l:sudo fdisk -l [sudo] password for braiam: Disk /dev/sda: 13.7 GB, 13701316608 bytes 255 heads, 63 sectors/track, 1665 cylinders, total 26760384 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: 0x8e48c4c5 Device Boot Start End Blocks Id System /dev/sda1 2104515 26749046 12322266 83 Linux (here is Ubuntu) /dev/sda2 63 2104514 1052226 82 Linux swap / Solaris Partition table entries are not in disk order Disk /dev/sdb: 200.0 GB, 200049647616 bytes 255 heads, 63 sectors/track, 24321 cylinders, total 390721968 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: 0x1549f232 Device Boot Start End Blocks Id System /dev/sdb1 * 63 223629311 111814624+ 7 HPFS/NTFS/exFAT /dev/sdb2 225724416 336437306 55356445+ 7 HPFS/NTFS/exFAT /dev/sdb3 223629312 225724415 1047552 82 Linux swap / Solaris /dev/sdb4 336439294 390721535 27141121 5 Extended /dev/sdb5 336439296 338391039 975872 83 Linux (here is boot) /dev/sdb6 338393088 339390463 498688 82 Linux swap / Solaris /dev/sdb7 339392512 368687103 14647296 83 Linux (here is Debian) /dev/sdb8 368689152 390721535 11016192 83 LinuxUbuntu 的 fstab 和 Debian 的 fstab 是一樣的，除了
/入口。sudo os-prober [sudo] password for braiam: /dev/sda1:Ubuntu 13.04 (13.04):Ubuntu:linux /dev/sdb1:Windows 7 (loader):Windows:chain
cat /boot/grub/device.map:cat /boot/grub/device.map (hd0) /dev/disk/by-id/ata-Maxtor_6L200M0_L40WL3VH (hd1) /dev/disk/by-id/usb-Sandisk-Curzer（自從我執行
sudo grub-mkdevicemap更改條目以來，我從腦海中提取了這些資訊）
我將安裝程序設置為重用我的
/boot我自己還沒有使用過雙啟動設置，但這對我來說似乎是個錯誤。
update-grub用於grub-probe確定目前根文件系統位於哪個設備上，然後將此設備作為root=參數附加linux到/boot/grub/grub.cfg. 這可能是您的 Ubuntu 條目正在引導 Debian 的原因 - 您可能正在使用 Ubuntu 的核心和 initramfs，但您grub.cfg指示它安裝您的 Debian 分區，然後繼續從該分區引導。我會嘗試將 Ubuntu 重新定位
/boot到它自己的根文件系統（這不應該太難，然後你不必重新分區，這可能需要重新安裝 Ubuntu）。然後設置 Debian 的 grub 來鍊式載入 Ubuntu 的 grub；那麼它應該可以正常工作。編輯：關於如何設置 Ubuntu 的小方法
/grub。請注意，我是從記憶中輸入的，所以要小心；）
- 是的，
*3.8*從 Debian轉移/grub到 Ubuntu 的/grub.- 打開根外殼。
chroot進入 Ubuntu 的文件系統：cd /media/braiam/bf554a2f-a035-4c22-bca8-162def35a03c for i in proc sys dev; do mount --bind /$i $i; done chroot /mnt /bin/bash你現在在Ubuntu 系統中（Ubuntu 的根文件系統現在是
/，至少在這個 shell 中），幾乎就像你已經啟動它一樣。 4. 如果您已經debsums安裝在 Ubuntu 上，您現在可以檢查失去的文件（以防您在 Debian 的引導中忘記了某些內容），但這可能需要一段時間：debsums -s
- 如果您需要在 中訪問 Internet
chroot，例如重新安裝損壞的軟體包，/etc/resolv.conf則在 chroot 中進行編輯應該可以解決問題。只需將nameserver線路指向 Debian 正在使用的同一 DNS 伺服器。vim /etc/resolv.conf
- 執行
grub-mkdevicemap。不確定這是否重要，但它可能不會受到傷害。grub-mkdevicemap
好吧，我不得不承認，我現在真的不確定如何在 Ubuntu 上安裝 grub，/boot或者是否有必要。grub-install需要一個設備，但我們不希望它寫一個 MBR …：/我將不得不對此進行更多研究。
我現在才意識到你的 Ubuntu 實際上是在一個單獨的硬碟上。只需將其安裝到此硬碟的 MBR 中即可：
grub-install /dev/sda
- 更新 grub 並重建 initramfs：
update-grub update-initramfs -u
- 離開
chroot：exit你仍然需要弄清楚如何告訴 Debian 的 grub 它應該鍊式載入現在存在於 Ubuntu 硬碟上的 grub2 MBR；我不知道它是否會自己解決這個問題。也許在 Debian 文件系統上添加一個
chainloader部分？/etc/grub.d/40_custom