[root@bogon 桌面]# cat /etc/redhat-release

Red Hat Enterprise Linux Everything release 7.0 Beta (Maipo)

[root@bogon 桌面]# uname -a

Linux bogon 3.10.0-54.0.1.el7.x86_64 #1 SMP Tue Nov 26 16:51:22 EST 2013 x86_64 x86_64 x86_64 GNU/Linux

[root@bogon 桌面]#



[root@bogon 桌面]# gedit /boot/grub2/grub.cfg


#

# DO NOT EDIT THIS FILE

#

# It is automatically generated by grub2-mkconfig using templates

# from /etc/grub.d and settings from /etc/default/grub

#


### BEGIN /etc/grub.d/00_header ###

set pager=1


if [ -s $prefix/grubenv ]; then

  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="${saved_entry}"

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

}


terminal_output console

set timeout=5

### END /etc/grub.d/00_header ###


### BEGIN /etc/grub.d/10_linux ###

menuentry 'Red Hat Enterprise Linux Everything, with Linux 3.10.0-54.0.1.el7.x86_64' --class red --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.10.0-54.0.1.el7.x86_64-advanced-45caca60-9dcb-4089-b7f1-d4eef5ab1cc6' {

    load_video

    set gfxpayload=keep

    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 --hint='hd0,msdos5'  733bdbba-1a79-4e34-84db-52c538c32e72

    else

      search --no-floppy --fs-uuid --set=root 733bdbba-1a79-4e34-84db-52c538c32e72

    fi

    linux16 /vmlinuz-3.10.0-54.0.1.el7.x86_64 root=UUID=45caca60-9dcb-4089-b7f1-d4eef5ab1cc6 ro vconsole.font=latarcyrheb-sun16 crashkernel=auto vconsole.keymap=us rhgb quiet LANG=zh_CN.UTF-8

    initrd16 /initramfs-3.10.0-54.0.1.el7.x86_64.img

}

menuentry 'Red Hat Enterprise Linux Everything, with Linux 2.6.32-279.el6.i686' --class red --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-2.6.32-279.el6.i686-advanced-45caca60-9dcb-4089-b7f1-d4eef5ab1cc6' {

    load_video

    set gfxpayload=keep

    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 --hint='hd0,msdos5'  733bdbba-1a79-4e34-84db-52c538c32e72

    else

      search --no-floppy --fs-uuid --set=root 733bdbba-1a79-4e34-84db-52c538c32e72

    fi

    linux16 /vmlinuz-2.6.32-279.el6.i686 root=UUID=45caca60-9dcb-4089-b7f1-d4eef5ab1cc6 ro vconsole.font=latarcyrheb-sun16 crashkernel=auto vconsole.keymap=us rhgb quiet

    initrd16 /initramfs-2.6.32-279.el6.i686.img

}

menuentry 'Red Hat Enterprise Linux Everything, with Linux 0-rescue-02df7358696e4b83bf621e3880b2a509' --class red --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-0-rescue-02df7358696e4b83bf621e3880b2a509-advanced-45caca60-9dcb-4089-b7f1-d4eef5ab1cc6' {

    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 --hint='hd0,msdos5'  733bdbba-1a79-4e34-84db-52c538c32e72

    else

      search --no-floppy --fs-uuid --set=root 733bdbba-1a79-4e34-84db-52c538c32e72

    fi

    linux16 /vmlinuz-0-rescue-02df7358696e4b83bf621e3880b2a509 root=UUID=45caca60-9dcb-4089-b7f1-d4eef5ab1cc6 ro vconsole.font=latarcyrheb-sun16 crashkernel=auto vconsole.keymap=us rhgb quiet

    initrd16 /initramfs-0-rescue-02df7358696e4b83bf621e3880b2a509.img

}


### 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_ppc_terminfo ###

### END /etc/grub.d/20_ppc_terminfo ###


### BEGIN /etc/grub.d/30_os-prober ###

menuentry 'CentOS release 6.3 (Final) (on /dev/sda6)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-simple-812fcc25-82f9-47b9-b944-654a5daa5e1a' {

    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 --hint='hd0,msdos5'  733bdbba-1a79-4e34-84db-52c538c32e72

    else

      search --no-floppy --fs-uuid --set=root 733bdbba-1a79-4e34-84db-52c538c32e72

    fi

    linux /vmlinuz-2.6.32-279.el6.i686 ro root=UUID=812fcc25-82f9-47b9-b944-654a5daa5e1a rd_NO_LUKS KEYBOARDTYPE=pc KEYTABLE=us rd_NO_MD crashkernel=auto LANG=zh_CN.UTF-8 rd_NO_LVM rd_NO_DM rhgb quiet

    initrd /initramfs-2.6.32-279.el6.i686.img

}

submenu 'Advanced options for CentOS release 6.3 (Final) (on /dev/sda6)' $menuentry_id_option 'osprober-gnulinux-advanced-812fcc25-82f9-47b9-b944-654a5daa5e1a' {

    menuentry 'CentOS (2.6.32-279.el6.i686) (on /dev/sda6)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/vmlinuz-2.6.32-279.el6.i686--812fcc25-82f9-47b9-b944-654a5daa5e1a' {

        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 --hint='hd0,msdos5'  733bdbba-1a79-4e34-84db-52c538c32e72

        else

          search --no-floppy --fs-uuid --set=root 733bdbba-1a79-4e34-84db-52c538c32e72

        fi

        linux /vmlinuz-2.6.32-279.el6.i686 ro root=UUID=812fcc25-82f9-47b9-b944-654a5daa5e1a rd_NO_LUKS KEYBOARDTYPE=pc KEYTABLE=us rd_NO_MD crashkernel=auto LANG=zh_CN.UTF-8 rd_NO_LVM rd_NO_DM rhgb quiet

        initrd /initramfs-2.6.32-279.el6.i686.img

    }

}


### 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  ${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 ###