安装Windows后重新启动Ubuntu

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本文介绍如何在Ubuntu安装过程中将GRUB引导加载程序安装到特定的硬盘分区。包括使用终端打开sudo权限，查找Ubuntu所在分区，挂载分区，以及最终安装GRUB的过程。

insert Live/Install CD
find a terminal
run: sudo su
find your ubuntu out (e.g. /dev/hda5 or /dev/sda7[my case]): fdisk -l
mkdir /mnt/root
mount -t ext3 /dev/sda7 /mnt/root
1. unmount it if it's not the one you want: umount /mnt/root
mount -t ext3 /dev/sda7 /mnt/root
install grub: grub-install --root-directory=/mnt/root /dev/sda
restart your computer if you get "This is the contents of the device map /voot/grub/device.map. Check if this is correct or not. If any of the lines is incorrect, fix it and re-run the script 'grub-install'. (sd0) /dev/sda),