ubuntu 提示no such device grub rescue的解决方法
<p style='margin: 0px; padding: 5px 0px; outline: none; font-size: 14px; line-height: 30px; font-family: tahoma, arial, "Microsoft YaHei";'>一早起来打开电脑，无法启动</p>
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显示 no such device blablabla</p>
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grub rescue></p>
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灰常的茫然，无奈，只得开启家中的那台老家伙。</p>
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一顿baidu google 后，大概清楚是因为昨天晚上的自动升级导致，grub加载软件出了些问题。</p>
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网上有两种解决方法：</p>
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本人尝试一种：成功了！ 由于这个问题相当普遍，所以写个小报告，为后人指点迷津～～～</p>
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本人电脑装有xp 和 ubuntu10.04 。</p>
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问题描述：开机初使化过程中出现的grub错误，原因可能多种，我这是由于升级导致的</p>
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原因： 主引导记录MBR消失了。</p>
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解决方法：</p>
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一种是在windows中修复MBR（mbtfix。Exe）</p>
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另一种是在ubuntu中修复MBR</p>
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普及下知识MBR：</p>
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The MBR may be used for one or more of the following:</p>
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Holding a disk's primary partition table.</p>
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Bootstrapping operating systems, after the computer's BIOS passes execution to machine code instructions contained within the MBR.</p>
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Uniquely identifying individual disk media, with a 32-bit disk signature; even though it may never be used by the machine the disk is running on.</p>
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我是通过第二种方法：</p>
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自行制作一个livecd，一种可以自启动的linux 安装盘 。</p>
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我没法烧cd，所以通过U盘制作了一个启动盘：</p>
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网址： http://www.ubuntu.com/desktop/get-ubuntu/download</p>
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上面有很详细的步骤。</p>
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1.首先下载一个ubuntu的iso镜像文件</p>
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2.下载universal usb installer</p>
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3.运行installer 將u盘制作成启动盘（移动硬盘不行）</p>
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4设置电脑的加载顺序，“先启动usb设备”。重新启动</p>
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5.直接启动ubuntu，打开terminal。</p>
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输入 ：sudo apt-get install lilo</p>
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sudo lilo -M /dev/sda mbr</p>
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(忽略所有警告，我们只要mbr)</p>
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6，重启，修改加载顺序，一切正常～～～ </p>
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