<p style="text-indent: 2em;">最近用自己的U盘做系统盘后发现U盘的容量由原来的15GB变为现在的4MB，对它进行格式化也没法恢复到以前的容量，这可怎么用啊。因此在网上找了下相关的解决方法，这里结合自己的U盘，给大家讲讲，希望给有需要的人一些帮助吧<img src="/UEditor/dialogs/emotion/images/face/i_f01.gif"/>。</p><p style="text-align:center"><img src="/uploads/AilsonJack/2018.08.23/1535032401962742.png" onclick="preview_image(&#39;/uploads/AilsonJack/2018.08.23/1535032401962742.png&#39;)"/></p><p style="text-align:center"><img src="/uploads/AilsonJack/2018.08.23/1535032402298963.png" onclick="preview_image(&#39;/uploads/AilsonJack/2018.08.23/1535032402298963.png&#39;)"/></p><p style="text-indent: 2em;">上面两幅图就是我的U盘目前的容量，格式化也不起作用，真是够了，下面就来说说解决方法吧。</p><p class="artical_littlestyle1">1、查看隐藏的大小</p><p style="text-indent: 2em;">右键<span style="color: rgb(255, 0, 0);">计算机</span>，选择<span style="color: rgb(255, 0, 0);">管理</span>，之后选择<span style="color: rgb(255, 0, 0);">磁盘管理</span>，可以看到我目前的U盘有15GB没有分配，难怪U盘容量变得这么小了：</p><p style="text-align:center"><img src="/uploads/AilsonJack/2018.08.23/1535032404105059.png" onclick="preview_image(&#39;/uploads/AilsonJack/2018.08.23/1535032404105059.png&#39;)"/></p><p style="text-align:center"><img src="/uploads/AilsonJack/2018.08.23/1535032404410390.png" onclick="preview_image(&#39;/uploads/AilsonJack/2018.08.23/1535032404410390.png&#39;)"/></p><p style="text-align:center"><img src="/uploads/AilsonJack/2018.08.23/1535032399615117.png" onclick="preview_image(&#39;/uploads/AilsonJack/2018.08.23/1535032399615117.png&#39;)"/></p><p class="artical_littlestyle2">2、打开分区工具</p><p style="text-indent: 2em;">按下&lt;<span style="color: rgb(255, 0, 0);">win + R</span>&gt;键打开<span style="color: rgb(255, 0, 0);">运行</span>，输入<span style="color: rgb(255, 0, 0);">diskpart</span>，打开分区工具：</p><p style="text-align:center"><img src="/uploads/AilsonJack/2018.08.23/1535032403955654.png" onclick="preview_image(&#39;/uploads/AilsonJack/2018.08.23/1535032403955654.png&#39;)"/></p><p style="text-align:center"><img src="/uploads/AilsonJack/2018.08.23/1535032400956476.png" onclick="preview_image(&#39;/uploads/AilsonJack/2018.08.23/1535032400956476.png&#39;)"/></p><p class="artical_littlestyle3">3、查看U盘的磁盘号</p><p style="text-indent: 2em;">输入命令<span style="color: rgb(255, 0, 0);">list disk</span>，列出磁盘列表。我这里有两个磁盘，其中<span style="color: rgb(255, 0, 0);">磁盘1</span>是需要进行格式化的U盘：</p><p style="text-align:center"><img src="/uploads/AilsonJack/2018.08.23/1535032402170252.png" onclick="preview_image(&#39;/uploads/AilsonJack/2018.08.23/1535032402170252.png&#39;)"/></p><p class="artical_littlestyle4">4、选中磁盘1</p><p style="text-indent: 2em;">我的U盘的磁盘号是磁盘1，因此我要选中磁盘1进行操作，输入命令：<span style="color: rgb(255, 0, 0);">select disk=1</span>，磁盘1现在是所选磁盘。再输入<span style="color: rgb(255, 0, 0);">list disk</span>，列出磁盘列表时，磁盘1前有*号，表示被选中。这一步重要，务必确定被选中的是U盘：</p><p style="text-align:center"><img src="/uploads/AilsonJack/2018.08.23/1535032403499682.png" onclick="preview_image(&#39;/uploads/AilsonJack/2018.08.23/1535032403499682.png&#39;)"/></p><p style="text-align:center"><img src="/uploads/AilsonJack/2018.08.23/1535032417155275.png" onclick="preview_image(&#39;/uploads/AilsonJack/2018.08.23/1535032417155275.png&#39;)"/></p><p class="artical_littlestyle1">5、清除磁盘1 的空间</p><p style="text-indent: 2em;">在选中了磁盘1之后，输入命令：<span style="color: rgb(255, 0, 0);">clean</span>，清除磁盘1的空间，提示Diskpart成功地清除了磁盘：</p><p style="text-align:center"><img src="/uploads/AilsonJack/2018.08.23/1535032417715397.png" onclick="preview_image(&#39;/uploads/AilsonJack/2018.08.23/1535032417715397.png&#39;)"/></p><p class="artical_littlestyle2">6、后续步骤</p><p style="text-indent: 2em;">在第1步打开的<span style="color: rgb(255, 0, 0);">磁盘管理</span>窗口中，右击磁盘1，选择<span style="color: rgb(255, 0, 0);">新建简单卷</span>，接下来按步骤操作：</p><p style="text-align:center"><img src="/uploads/AilsonJack/2018.08.23/1535032418905533.png" onclick="preview_image(&#39;/uploads/AilsonJack/2018.08.23/1535032418905533.png&#39;)"/></p><p style="text-indent: 2em;">点击<span style="color: rgb(255, 0, 0);">下一步</span>：</p><p style="text-align:center"><img src="/uploads/AilsonJack/2018.08.23/1535032466921784.png" onclick="preview_image(&#39;/uploads/AilsonJack/2018.08.23/1535032466921784.png&#39;)"/></p><p style="text-indent: 2em;">点击<span style="color: rgb(255, 0, 0);">下一步</span>：</p><p style="text-align:center"><img src="/uploads/AilsonJack/2018.08.23/1535032468674944.png" onclick="preview_image(&#39;/uploads/AilsonJack/2018.08.23/1535032468674944.png&#39;)"/></p><p style="text-indent: 2em;">点击<span style="color: rgb(255, 0, 0);">下一步</span>：</p><p style="text-align:center"><img src="/uploads/AilsonJack/2018.08.23/1535032469731843.png" onclick="preview_image(&#39;/uploads/AilsonJack/2018.08.23/1535032469731843.png&#39;)"/></p><p style="text-indent: 2em;">点击<span style="color: rgb(255, 0, 0);">下一步</span>：</p><p style="text-align:center"><img src="/uploads/AilsonJack/2018.08.23/1535032466921985.png" onclick="preview_image(&#39;/uploads/AilsonJack/2018.08.23/1535032466921985.png&#39;)"/></p><p style="text-indent: 2em;">点击<span style="color: rgb(255, 0, 0);">完成</span>：</p><p style="text-align:center"><img src="/uploads/AilsonJack/2018.08.23/1535032469723474.png" onclick="preview_image(&#39;/uploads/AilsonJack/2018.08.23/1535032469723474.png&#39;)"/></p><p style="text-indent: 2em;">此时可以看到U盘的空间恢复了：</p><p style="text-align:center"><img src="/uploads/AilsonJack/2018.08.23/1535032464437603.png" onclick="preview_image(&#39;/uploads/AilsonJack/2018.08.23/1535032464437603.png&#39;)"/></p><p style="text-align: center;"><img src="/uploads/AilsonJack/2018.08.23/1535032467775037.png" onclick="preview_image(&#39;/uploads/AilsonJack/2018.08.23/1535032467775037.png&#39;)"/></p>