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把系统从 deepin 重装成 ubuntu
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<div class="post-description">记录从 deepin 系统迁移到 ubuntu 系统的过程，保留了 home 分区的内容。</div>
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<h2 id="准备工作"><a href="#准备工作" class="headerlink" title="准备工作"></a>准备工作</h2><h3 id="记下分区挂载点"><a href="#记下分区挂载点" class="headerlink" title="记下分区挂载点"></a>记下分区挂载点</h3><p>在安装之前，要先记下各个分区的挂载点，以便后续安装过程中进行挂载。</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">sudo fdisk -l</span><br></pre></td></tr></table></figure>
<p><img src="https://renshengjihe-1257851699.cos.ap-guangzhou.myqcloud.com/191125-deepinTuUbuntu/fdisk.png" alt="fdisk"></p>
<p>从图中命令的结果可以得到以下几条信息</p>
<ul>
<li>计算机内当前有 2 个存储设备，/dev/sda 和 /dev/sdb</li>
<li>/dev/sda 是电脑内置的固态硬盘，分了四个分区，<strong>可通过 <code>df</code> 命令查看挂载点。</strong>特别要记清根目录和 home 目录的挂载位置。</li>
</ul>
<table>
<thead>
<tr>
<th align="left">分区名称</th>
<th align="left">类型</th>
<th align="left">挂载点</th>
</tr>
</thead>
<tbody><tr>
<td align="left">/dev/sda1</td>
<td align="left">EFI System</td>
<td align="left">/boot/efi</td>
</tr>
<tr>
<td align="left">/dev/sda2</td>
<td align="left">Linux swap</td>
<td align="left"></td>
</tr>
<tr>
<td align="left">/dev/sda3</td>
<td align="left">Linux filesystem</td>
<td align="left">/</td>
</tr>
<tr>
<td align="left">/dev/sda4</td>
<td align="left">Linux filesystem</td>
<td align="left">/home`</td>
</tr>
</tbody></table>
<ul>
<li>/dev/sdb 是插入电脑的 U 盘，用来作新系统启动盘。</li>
</ul>
<h2 id="制作U盘"><a href="#制作U盘" class="headerlink" title="制作U盘"></a>制作U盘</h2><p>使用下面的命令来制作启动盘</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">sudo dd if=xxxx.iso of=/dev/sdb </span><br></pre></td></tr></table></figure>
<ul>
<li>xxxx.iso 处填写镜像文件的完整路径</li>
<li>of 参数一定要填 U 盘对应的路径名，<strong>注意：不带数字，不是 /dev/sdb1</strong></li>
<li>这里会等待比较长的时间，且终端不会有任何显示，不要误以为卡了。</li>
</ul>
<h2 id="开始安装"><a href="#开始安装" class="headerlink" title="开始安装"></a>开始安装</h2><p>启动盘制作完成后，关机，开机按对应的键进入 BIOS，选择 U 盘启动，开始 ubuntu 的安装，以下是需要注意的一些细节。</p>
<ul>
<li>点击安装前最好<strong>断网</strong>，因为 ubuntu 会在安装时下载更新，下载的速度较慢，可以等系统装完之后更改了镜像源用国内源进行更新。</li>
<li>在选择安装在何处时，选择最下面的自定义，在自定义界面，按照之前记下的挂载点进行挂载。根挂载点所在分区格式化，home 只挂载不做格式化操作。</li>
</ul>
<p>ps： 这一步忘了留下珍贵的图像资料，将就着看下文字吧。</p>
<p>设置完毕点击下一步，会提示将格式化两个分区，一个是 efi， 一个是 / 所在分区</p>
<h2 id="完成"><a href="#完成" class="headerlink" title="完成"></a>完成</h2><p>等待安装完成，一个崭新的 ubuntu 又出现了，哈哈哈。</p>
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