Ubuntu - Grub2.0修改默认启动项

1.我的环境:

Ubuntu10.04

2.关键位置和文件:

/boot/grub/grub.cfg文件;

/etc/grub.d/目录;

/etc/default/grub文件;

3.查看/boot/grub/grub.cfg文件:

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

menuentry'Ubuntu,withLinux2.6.32-21-generic'--classubuntu--classgnu-linux--classgnu--classos{

}

menuentry'Ubuntu,withLinux2.6.32-21-generic(recoverymode)'--classubuntu--classgnu-linux--classgnu--classos{

}

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

###BEGIN/etc/grub.d/20_memtest86+###

menuentry"Memorytest(memtest86+)"{

}

menuentry"Memorytest(memtest86+,serialconsole115200)"{

}

###END/etc/grub.d/20_memtest86+###

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

menuentry"MicrosoftWindowsXPProfessional(on/dev/sda1)"{

}

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

注意:从0开始计数,Ubuntu10.04启动项为0;WindowsXP启动项为4;

4.修改/etc/default/grub文件:

#Ifyouchangethisfile,run'update-grub'afterwardstoupdate

#/boot/grub/grub.cfg.

GRUB_DEFAULT=4

注意:GRUB_DEFAULT的默认值为0;

5.执行命令:

$sudoupdate-grub

6.重新启动。

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