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网上的说法主要有两种,分别是修改两个文件:
/boot/grub/grub.conf or /boot/grub/menu.lst
也有说是 /etc 目录下的相应文件的,但是在 Ubuntu-9.10 下面,具体文件是这样地:
/boot/grub/grub.cfg
至于更改的那个 set default=”x“, 那个x的意思,就拿我机器作为例子来说:
[eg].> ls -l grub.cfg-r--r--r-- grub.cfg
> sudo chmod 244 grub.cfg> ls -l grub.cfg--w-r--r-- grub.cfg
> sudo vim grub.cfg
修改之后,最后别忘了:> sudo chmod 444 grub.cfg // 一定记得要改回来.
我晕,用过一段时间后竟然有这么多东西,那么就用彩色来突出一下重点吧,其他内容请自动跳过。如蓝色部分所示,grub里面一共分为这么几个部分,一般三个。再如红色部分所示,也就是 menuentry 项,所以 menuentry 项按顺序从 0 开始排列,如果想让哪个被默认启动,就将 set default=“x” 中的 x 改为那个 entry 的编号。eg,如果我的电脑想默认进 windows (虽然这是没门的事),就另 x 为 8. 体现为启动时到选择启动系统时光标默认定位在 windows 系统入口上。
至于将 windows 系统不仅设置为默认启动, 而且要放在所有系统入口最顶端,还没试过。只是根据这个文件猜测:是不是将这个文件的 windows 的那个 menuentry 剪切到最前面就行? 使其 entry 编号为 0... 这个猜测暂不确定。
-------------------------------------- grub.cfg, start ---------------------------------#
# 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/00_header ###
if [ -s /boot/grub/grubenv ]; then
have_grubenv=true
load_env
fi
[color="#FF0102"]set default="0"
if [ ${prev_saved_entry} ]; then
saved_entry=${prev_saved_entry}
save_env saved_entry
prev_saved_entry=
save_env prev_saved_entry
fi
insmod ext2
set root=(hd0,8)
search --no-floppy --fs-uuid --set ab1eac76-a5d7-4656-8918-ffb406010912
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 fifiif [ ${recordfail} = 1 ]; then set timeout=-1else set timeout=10fi### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/05_debian_theme ###set menu_color_normal=white/blackset menu_color_highlight=black/white### END /etc/grub.d/05_debian_theme ###
[color="#0001FF"]### BEGIN /etc/grub.d/10_linux ###[color="#FF0102"]menuentry "Ubuntu, Linux 2.6.31-18-generic" { // 0 recordfail=1 if [ -n ${have_grubenv} ]; then save_env recordfail; fi set quiet=1 insmod ext2 set root=(hd0,8) search --no-floppy --fs-uuid --set ab1eac76-a5d7-4656-8918-ffb406010912 linux /boot/vmlinuz-2.6.31-18-generic root=UUID=ab1eac76-a5d7-4656-8918-ffb406010912 ro quiet splash initrd /boot/initrd.img-2.6.31-18-generic}[color="#FF0102"]menuentry "Ubuntu, Linux 2.6.31-18-generic (recovery mode)" { // 1 recordfail=1 if [ -n ${have_grubenv} ]; then save_env recordfail; fi insmod ext2 set root=(hd0,8) search --no-floppy --fs-uuid --set ab1eac76-a5d7-4656-8918-ffb406010912 linux /boot/vmlinuz-2.6.31-18-generic root=UUID=ab1eac76-a5d7-4656-8918-ffb406010912 ro single initrd /boot/initrd.img-2.6.31-18-generic}[color="#FF0102"]menuentry "Ubuntu, Linux 2.6.31-17-generic" { // 2 recordfail=1 if [ -n ${have_grubenv} ]; then save_env recordfail; fi set quiet=1 insmod ext2 set root=(hd0,8) search --no-floppy --fs-uuid --set ab1eac76-a5d7-4656-8918-ffb406010912 linux /boot/vmlinuz-2.6.31-17-generic root=UUID=ab1eac76-a5d7-4656-8918-ffb406010912 ro quiet splash initrd /boot/initrd.img-2.6.31-17-generic}[color="#FF0102"]menuentry "Ubuntu, Linux 2.6.31-17-generic (recovery mode)" { // 3 recordfail=1 if [ -n ${have_grubenv} ]; then save_env recordfail; fi insmod ext2 set root=(hd0,8) search --no-floppy --fs-uuid --set ab1eac76-a5d7-4656-8918-ffb406010912 linux /boot/vmlinuz-2.6.31-17-generic root=UUID=ab1eac76-a5d7-4656-8918-ffb406010912 ro single initrd /boot/initrd.img-2.6.31-17-generic}[color="#FF0102"]menuentry "Ubuntu, Linux 2.6.31-14-generic" { // 4 recordfail=1 if [ -n ${have_grubenv} ]; then save_env recordfail; fi set quiet=1 insmod ext2 set root=(hd0,8) search --no-floppy --fs-uuid --set ab1eac76-a5d7-4656-8918-ffb406010912 linux /boot/vmlinuz-2.6.31-14-generic root=UUID=ab1eac76-a5d7-4656-8918-ffb406010912 ro quiet splash splash initrd /boot/initrd.img-2.6.31-14-generic}[color="#FF0102"]menuentry "Ubuntu, Linux 2.6.31-14-generic (recovery mode)" { // 5 recordfail=1 if [ -n ${have_grubenv} ]; then save_env recordfail; fi insmod ext2 set root=(hd0,8) search --no-floppy --fs-uuid --set ab1eac76-a5d7-4656-8918-ffb406010912 linux /boot/vmlinuz-2.6.31-14-generic root=UUID=ab1eac76-a5d7-4656-8918-ffb406010912 ro single initrd /boot/initrd.img-2.6.31-14-generic}[color="#0001FF"]### END /etc/grub.d/10_linux ###
[color="#0001FF"]### BEGIN /etc/grub.d/20_memtest86+ ###[color="#FF0102"]menuentry "Memory test (memtest86+)" { // 6 linux16 /boot/memtest86+.bin}[color="#FF0102"]menuentry "Memory test (memtest86+, serial console 115200)" { // 7 linux16 /boot/memtest86+.bin console=ttyS0,115200n8}[color="#0001FF"]### END /etc/grub.d/20_memtest86+ ###[color="#0001FF"]### BEGIN /etc/grub.d/30_os-prober ###[color="#FF0102"]menuentry "Microsoft Windows XP Professional (on /dev/sda1)" { // 8 insmod ntfs set root=(hd0,1) search --no-floppy --fs-uuid --set 6044685444682f4a drivemap -s (hd0) ${root} chainloader +1}### 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 ###
--------------------------------- grub.cfg, end ---------------------------------------------
shepherdFri,Jan/29/2010.
本文来自ChinaUnix博客,如果查看原文请点:http://blog.chinaunix.net/u3/111146/showart_2163930.html |
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