Windows、Ubuntu双系统重装windows系统后grub引导的修复及默认启_MySQL
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bitsCN.comWindows、Ubuntu双系统重装windows系统后grub引导的修复及默认启动项的修改
今天帮童鞋重装系统,他的电脑是Windows、Ubuntu双系统,需要重装的系统是windows,据说是因为很多游戏都只支持64位,要给换成64位的 = =...
于是我就帮他装了个windows,之后重新引导了Ubuntu,下面记录下:
gurb引导的修复:
1、拿一个Ubuntu系统U盘或者光盘,没有的话去烧一个,如何烧点此文。
2、重启进入U盘或光盘启动,选择实用Ubuntu(try ubuntu)。
3、查看信息。打开终端(ctrl+alt+t),在终端下输入
[plain]
sudo -i(获得管理员权限)
fdisk -l(查看分区及类型)
然后会出现你的磁盘的信息。
[plain]
Device Boot Start End Blocks Id System
在Id列找出83的那行对应的Device列的内容,看看是sda多少的,下面假设为sda*。(假如有多个Id为的83分区,可以从后面一个一个尝试4-6步)。
4、挂载分区。在终端输入(注意*的替换和空格):
[plain]
mount /dev/sda* /mnt
5、在终端输入:
[plain]
grub-install --root-directory=/mnt /dev/sda
稍等片刻便能看到:Installationfinished,No Error Reported的字样,说明设置成功了。
6、重启电脑就能看到Ubuntu的grub引导界面了,如果没有请返回第3步看看是否有多个Id为83的分区。
7、此时先别进入windows,进入Ubuntu在终端中输入:
[plain]
sudo update-grub
执行完重启电脑就可以正常进入windows和Ubuntu了,这时grub引导算修复完毕。
grub默认启动项的修改
那位同学还要求把默认启动项给改回windows。。。(这样一学期能进几次Ubuntu。。。)
在启动时记住windows是在启动项的第几行。
进入Ubuntu,在终端上输入:
[plain]
sudo gedit /boot/grub/grub.cfg
将set default="0"上面的0改为刚才看到的windows在第几行减一。
保存退出,重启即可。

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