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  • 打赏 jQuery火箭图标返回顶部代码</h1> <div style="border: 1px solid #dfdfdf;border-top:none;"></div> <div style=" height: 200px; overflow:hidden;"> <span class="pre-scrollable"><div id="cnblogs_post_body" class="blogpost-body"> <p>分区?我们不是已经在BIOS界面分区好了吗?如果领导给你一块磁盘,你怎么用呢?所以就有了分区工具(fdisk和parted),fdisk工具只针对小于2T磁盘分区,且是交互式的;parted很强大,通吃(不同磁盘的大小都可以分区的)parted可以是非交互式的,所以说parted很强大,经常用到,那么让博主娓娓道来吧...</p> <p>1)硬盘存储逻辑结构图</p> <p><img src="https://images2018.cnblogs.com/blog/1430251/201809/1430251-20180912141038215-1775782998.png" alt="" width="741" height="332"></p> <p>看网上这个图,我们可以,了解到磁盘主分区跟扩展分区一共有且最多只能有4个,所以说主分区的编号就是1-4,扩展分区分的逻辑分区就只能从5开始了</p> <p>2)<br>    1、磁盘分区实质就是针对64字节(byte)分区表进行设置。<br>  2、一块磁盘的分区表仅有64字节大小,仅支持四个分区表(主+扩展)<br>  3、磁盘的分区的最小单位为柱面(cylinder)<br>  4、扩展分区不能直接使用,还需要在扩展分区的基础上创建逻辑分区才行。<br>  5、扩展分区中有自己的分区表,因此,扩展分区下面的逻辑分区可以有多个。<br>3)例子<br>   范例1:假如我有一块sas硬盘,我想要把磁盘分成6个可以使用的磁盘分区,那么每一个磁盘分区在linux系统下的数字编号是多少?<br>      <span style="background-color: rgba(255, 255, 0, 1)">说明:</span>由于硬盘在Primary+Extended最多可以有四个,因此,在linux系统下,会默认1~4的分区编号,保留下来跟主分区和扩展分区使用,逻辑分区不可以占用1-4分区编号。</p> <p>  所以就会有三种情况 1p+1e就是1 56789 2p+1e  12  5678  3p+1e  123 567</p> <p>4)查看系统又没有安装</p> <p><img src="https://images2018.cnblogs.com/blog/1430251/201809/1430251-20180912152619993-1438051021.png" alt="" width="818" height="216"></p> <p>那么我们来介绍一下fdisk 如何使用吧</p> <p>fdisk [选项] <disk>  改变分区表 </p> <p>fdisk [选项] –l <disk>  列出所有分区表</p> <p>fdisk –s <partition(分区编号)>  以分区块为单位,给出指定分区的大小</p> <p>这是一个创建和维护分区的命令,兼容DOS类型的分区表、BSD或SUN类型的磁盘列表。</p> <p><img src="https://images2018.cnblogs.com/blog/1430251/201809/1430251-20180912152953463-123906786.png" alt=""></p> <p>这些参数选项都不怎么用,主要用到  l 也就是list 列出所有的分区表,</p> <p>parted 非交互式分区命令操作如下:</p> <div class="cnblogs_code"> <pre>parted /dev/<span style="color: rgba(0, 0, 0, 1)">sda mklabel gpt parted </span>/dev/sda mkpart primary <span style="color: rgba(128, 0, 128, 1)">0</span> <span style="color: rgba(128, 0, 128, 1)">500</span> <<span style="color: rgba(0, 0, 0, 1)">##默认是mb为单位 parted </span>/dev/sda mkpart primary <span style="color: rgba(128, 0, 128, 1)">501</span> <span style="color: rgba(128, 0, 128, 1)">1000</span><span style="color: rgba(0, 0, 0, 1)"> parted </span>/dev/<span style="color: rgba(0, 0, 0, 1)">sda p mkfs </span>-t ext4 /dev/sda <<span style="color: rgba(0, 0, 0, 1)">##mkfs 格式化磁盘 mount </span>/dev/sda /tmp <##mount 挂载磁盘</pre> </div> <p>partprobe</p> <p>  这个命令可以立刻读取最新的分区表,而不需要重新启动。<br>  提示:<br>  parted命令和fdisk命令不同,fdisk命令是等到你最后执行那个w的时候才生效最终写入到分区表中的,<br>  parted命令是实时的写入到分区表中的,所以在操作有数据的磁盘的时候需要格外小心!</p> <p>  fdisk     磁盘分区命令,-l查看分区列表,使用于小于2T的分区工具<br>  parted    GNU磁盘分区工具,适合大于2T的分区工具<br>  mount     挂载命令 -t 文件类型 -o 挂载的选项 -a<br>  umount    卸载的命令 -lf强制卸载<br><br></p> </div> </span> </div> <div style="text-align: center;"> <a href="https://www.cnblogs.com/liang-io/p/9635158.html" target="_blank" style="font-size: 16px;background-color: rgb(24, 144, 255); color: white;padding: 8px;padding-left: 30px;padding-right: 30px;border-radius: 2rem;">查看全文</a> </div> </li> <div style="border: 1px solid #dfdfdf;border-top:none;"></div> <li class="ul-li" style="padding-left:15px;padding-right: 15px;"> <b>相关阅读:</b><br> <nobr> <a href="neighthorn-p-6475875.html" target="_blank">BZOJ 4318: OSU!</a> <br/><a href="neighthorn-p-6475834.html" target="_blank">BZOJ 3450: Tyvj1952 Easy</a> <br/><a href="neighthorn-p-6474012.html" target="_blank">BZOJ 1426: 收集邮票</a> <br/><a href="neighthorn-p-6472099.html" target="_blank">BZOJ 1415: [Noi2005]聪聪和可可</a> <br/><a href="neighthorn-p-6443857.html" target="_blank">BZOJ 1778: [Usaco2010 Hol]Dotp 驱逐猪猡</a> <br/><a href="neighthorn-p-6443623.html" target="_blank">BZOJ 3270: 博物馆</a> <br/><a href="neighthorn-p-6443181.html" target="_blank">BZOJ 3143: [Hnoi2013]游走</a> <br/><a href="neighthorn-p-6442595.html" target="_blank">BZOJ 3166: [Heoi2013]Alo</a> <br/><a href="neighthorn-p-6442194.html" target="_blank">BZOJ 3261: 最大异或和</a> <br/><a href="neighthorn-p-6441330.html" target="_blank">BZOJ 1022: [SHOI2008]小约翰的游戏John</a> <br/> </nobr> </li> <div style="border: 1px solid #dfdfdf;border-top:none;"></div> <li class="list-group-item from-a mb-2" style="margin:15px;"> 原文地址:https://www.cnblogs.com/liang-io/p/9635158.html </li> </ul> </div> <!-- 右侧开始 --> <div class="right-kd" style="margin: auto;margin: 0px;float: left;"> <ul class="right-kd" style="word-break:break-all;border: 1px solid #dfdfdf;border-radius: 3px 3px 3px 3px;padding: 0px;margin: 0px;"> <li class="ul-li-bg ul-li-title" aria-current="true" style="padding-left:15px;padding-right: 15px;"> 最新文章 </li> <li class="ul-li" style="padding-left:15px;padding-right:15px;"> <nobr> <a href="zhien-aa-p-5683062.html" target="_blank">Codeforces Round #241 (Div. 2)->B. 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