修改ubuntu启动项

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http://blog.csdn.net/lb015331/archive/2010/11/23/6028594.aspx

sudo gedit /boot/grub/grub.cfg

以上需要root权限

修改顺序要从"BEGIN"到 "END"整段移动 !
set timeout=10 ------------------------------启动列表停留时间
修改后如下

#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by /usr/sbin/grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/30_os-prober ### －－－－－－－－－－－－－－－－－－－－第一个启动项：XP
menuentry "Microsoft Windows XP Professional (on /dev/sda1)" {
   insmod ntfs
   set root='(hd0,1)'
   search --no-floppy --fs-uuid --set fe4c3f914c3f43a5
   drivemap -s (hd0) ${root}
   chainloader +1
}
### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/40_custom ###－－－－－－－－－－－－－－－－－－－－第二个启动项：ubuntu
# 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/00_header ###－－－－－－－－－－－－－－－－－－－－第三个启动项
if [ -s $prefix/grubenv ]; then
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 ${boot_once} ]; then save_env recordfail; fi; fi
}
insmod ext2
set root='(hd0,4)'
search --no-floppy --fs-uuid --set 8450af8f-090b-4eae-a123-6f1e3604fa9e
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=640x480
insmod gfxterm
insmod vbe
if terminal_output gfxterm ; then true ; else
    # For backward compatibility with versions of terminal.mod that don't
    # understand terminal_output
    terminal gfxterm
fi
fi
insmod ext2
set root='(hd0,4)'
search --no-floppy --fs-uuid --set 8450af8f-090b-4eae-a123-6f1e3604fa9e
set locale_dir=($root)/boot/grub/locale
set lang=en
insmod gettext
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 ###－－－－－－－－－－－－－－－－－－－－第四个启动项
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
menuentry 'Ubuntu, with Linux 2.6.32-24-generic' --class ubuntu --class gnu-linux --class gnu --class os {
   recordfail
   insmod ext2
   set root='(hd0,4)'
   search --no-floppy --fs-uuid --set 8450af8f-090b-4eae-a123-6f1e3604fa9e
   linux   /boot/vmlinuz-2.6.32-24-generic root=UUID=8450af8f-090b-4eae-a123-6f1e3604fa9e ro   quiet splash
   initrd   /boot/initrd.img-2.6.32-24-generic
}
menuentry 'Ubuntu, with Linux 2.6.32-24-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
   recordfail
   insmod ext2
   set root='(hd0,4)'
   search --no-floppy --fs-uuid --set 8450af8f-090b-4eae-a123-6f1e3604fa9e
   echo   'Loading Linux 2.6.32-24-generic ...'
   linux   /boot/vmlinuz-2.6.32-24-generic root=UUID=8450af8f-090b-4eae-a123-6f1e3604fa9e ro single
   echo   'Loading initial ramdisk ...'
   initrd   /boot/initrd.img-2.6.32-24-generic
}
menuentry 'Ubuntu, with Linux 2.6.32-21-generic' --class ubuntu --class gnu-linux --class gnu --class os {
   recordfail
   insmod ext2
   set root='(hd0,4)'
   search --no-floppy --fs-uuid --set 8450af8f-090b-4eae-a123-6f1e3604fa9e
   linux   /boot/vmlinuz-2.6.32-21-generic root=UUID=8450af8f-090b-4eae-a123-6f1e3604fa9e ro   quiet splash
   initrd   /boot/initrd.img-2.6.32-21-generic
}
menuentry 'Ubuntu, with Linux 2.6.32-21-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
   recordfail
   insmod ext2
   set root='(hd0,4)'
   search --no-floppy --fs-uuid --set 8450af8f-090b-4eae-a123-6f1e3604fa9e
   echo   'Loading Linux 2.6.32-21-generic ...'
   linux   /boot/vmlinuz-2.6.32-21-generic root=UUID=8450af8f-090b-4eae-a123-6f1e3604fa9e ro single
   echo   'Loading initial ramdisk ...'
   initrd   /boot/initrd.img-2.6.32-21-generic
}
### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/20_memtest86+ ###－－－－－－－－－－－－－－－－－－－－第五个启动项
menuentry "Memory test (memtest86+)" {
   insmod ext2
   set root='(hd0,4)'
   search --no-floppy --fs-uuid --set 8450af8f-090b-4eae-a123-6f1e3604fa9e
   linux16   /boot/memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
   insmod ext2
   set root='(hd0,4)'
   search --no-floppy --fs-uuid --set 8450af8f-090b-4eae-a123-6f1e3604fa9e
   linux16   /boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###