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How to Add a New Disk Larger Than 2TB to An Existing Linux
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Have you ever tried to do the partitioning of hard disk larger than 2TB using [fdisk utility][1] and wondered why you end up getting a warning to use GPT? Yes, you got that right. We cannot partition a hard disk larger than 2TB using fdisk tool.
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In such cases, we can use parted command. The major difference lies in the partitioning formats that fdisk uses DOS partitioning table format and parted uses GPT format.
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TIP: You can use gdisk as well instead of parted tool.
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In this article, we will show you to add a new disk larger than 2TB to an existing Linux server such as RHEL/CentOS or Debian/Ubuntu.
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I am using fdisk and parted utilities to do this configuration.
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First list the current partition details using fdisk command as shown.
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```
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# fdisk -l
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```
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[
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][2]
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List Linux Partition Table
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For the purpose of this article, I am attaching a hard disk of 20GB capacity, which can be followed for disk larger than 2TB as well. Once you added a disk, verify the partition table using same fdisk command as shown.
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```
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# fdisk -l
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```
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[
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][3]
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List New Partition Table
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Tip: If you are adding a physical hard disk, you may find that partitions already created. In such cases, you can use fdsik to delete the same before using parted.
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```
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# fdisk /dev/xvdd
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```
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Use `d` switch for the command to delete the partition and `w` to write the changes and quit.
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[
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][4]
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Delete Linux Partition
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Important: You need to be careful while deleting the partition. This will erase the data on the disk.
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Now its time to partition a new hard disk using parted command.
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```
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# parted /dev/xvdd
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```
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Set the partition table format to GPT
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```
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(parted) mklabel gpt
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```
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Create the Primary partition and assign the disk capacity, here I am using 20GB (in your case it would be 2TB).
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```
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(parted) mkpart primary 0GB 20GB
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```
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[
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][5]
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Create Partition using Parted
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Just for curiosity, let’s see how this new partition is listed in fdisk.
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```
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# fdisk /dev/xvdd
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```
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][6]
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Verify Partition Details
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Now format and then mount the partition and add the same in /etc/fstab which controls the file systems to be mounted when the system boots.
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```
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# mkfs.ext4 /dev/xvdd1
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```
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][7]
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Format Linux Partition
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Once partition has been formatted, now it’s time mount the partition under /data1.
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```
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# mount /dev/xvdd1 /data1
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```
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For permanent mounting add the entry in /etc/fstab file.
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```
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/dev/xvdd1 /data1 ext4 defaults 0 0
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```
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Important: Kernel should support GPT in order to partition using GPT format. By default RHEL/CentOS have Kernel with GPT support, but for Debian/Ubuntu you need to recompile the kernel after changing the config.
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That’s it! In this article, we have shown you how to use the parted command. Share your comments and feedback with us.
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--------------------------------------------------------------------------------
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作者简介：
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I work on various platforms including IBM-AIX, Solaris, HP-UX, and storage technologies ONTAP and OneFS and have hands on experience on Oracle Database.
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-----------------------
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via: http://www.tecmint.com/add-disk-larger-than-2tb-to-an-existing-linux/
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作者：[Lakshmi Dhandapani][a]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]:http://www.tecmint.com/author/lakshmi/
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[1]:http://www.tecmint.com/fdisk-commands-to-manage-linux-disk-partitions/
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[2]:http://www.tecmint.com/wp-content/uploads/2017/04/List-Linux-Partition-Table.png
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[3]:http://www.tecmint.com/wp-content/uploads/2017/04/List-New-Partition-Table.png
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[4]:http://www.tecmint.com/wp-content/uploads/2017/04/Delete-Linux-Partition.png
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[5]:http://www.tecmint.com/wp-content/uploads/2017/04/Create-Partition-using-Parted.png
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[6]:http://www.tecmint.com/wp-content/uploads/2017/04/Verify-Partition-Details.png
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[7]:http://www.tecmint.com/wp-content/uploads/2017/04/Format-Linux-Partition.png
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[8]:http://www.tecmint.com/author/lakshmi/
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[9]:http://www.tecmint.com/10-useful-free-linux-ebooks-for-newbies-and-administrators/
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[10]:http://www.tecmint.com/free-linux-shell-scripting-books/
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@ -0,0 +1,141 @@
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如何在 Linux 中添加一块大于 2TB 的新磁盘
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============================================================
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你有没有试过使用 [fdisk][1] 对大于 2TB 的硬盘进行分区，并且想知道为什么会得到需要使用 GPT 的警告？ 是的，你看到的没错。我们无法使用 fdisk 对大于 2TB 的硬盘进行分区。
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在这种情况下，我们可以使用 parted 命令。它的主要区别在于 fdisk 使用 DOS 分区表格式而 parted 使用 GPT 格式。
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提示：你可以使用 gdisk 来代替 parted。
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在本文中，我们将介绍如何将大于 2TB 的新磁盘添加到现有的 Linux 服务器中（如 RHEL/CentOS 或 Debian/Ubuntu）中。
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我使用的是 fdisk 和 parted 来进行此配置。
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首先使用 fdisk 命令列出当前的分区详细信息，如图所示。
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```
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# fdisk -l
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```
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[
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][2]
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列出 Linux 分区表
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为了本文的目的，我加了一块 20GB 的磁盘，这也可以是大于 2TB 的磁盘。在你加完磁盘后，使用相同的 fdisk 命令验证分区表。
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```
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# fdisk -l
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```
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][3]
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列出新的分区表
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提示：如果你添加了一块物理磁盘，你可能会发现分区已经创建了。此种情况下，你可以在使用 parted 之前使用 fdisk 删除它。
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```
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# fdisk /dev/xvdd
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```
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在命令中使用 `d` 开关删除分区，使用 `w` 保存更改并退出。
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][4]
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删除 Linux 分区
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重要：在删除分区时你需要小心点。这会擦除磁盘上的数据。
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现在是使用 parted 命令分区新的磁盘了。
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```
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# parted /dev/xvdd
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```
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将分区表格式化成 GPT
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```
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(parted) mklabel gpt
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```
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创建主分区并分配磁盘容量，这里我使用 20GB （在你这里可能是 2TB）。
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```
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(parted) mkpart primary 0GB 20GB
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```
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[
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][5]
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使用 parted 创建分区
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出于好奇，让我们用 fdisk 看看新的分区。
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```
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# fdisk /dev/xvdd
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```
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验证分区细节
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现在格式化并挂载分区，并在 /etc/fstab 添加相同的信息，它控制在系统启动时挂载文件系统。
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```
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# mkfs.ext4 /dev/xvdd1
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```
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][7]
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格式化 Linux 分区
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一旦分区格式化之后，是时候在 /data1 下挂载分区了。
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```
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# mount /dev/xvdd1 /data1
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```
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要永久挂载，在 /etc/fstab 添加条目。
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```
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/dev/xvdd1 /data1 ext4 defaults 0 0
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```
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重要：要使用 GPT 分区格式需要内核支持。默认上 RHEL/CentOS 的内核已经支持 GPT，但是对于 Debian/Ubuntu，你需要在修改配置之后重新编译内核。
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就是这样了！在本文中，我们向你展示了如何使用 parted 命令。与我们分享你的评论和反馈。
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--------------------------------------------------------------------------------
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作者简介：
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我在包括 IBM-AIX、Solaris、HP-UX 以及 ONTAP 和 OneFS 存储技术的不同平台上工作，并掌握 Oracle 数据库。
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-----------------------
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via: http://www.tecmint.com/add-disk-larger-than-2tb-to-an-existing-linux/
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作者：[Lakshmi Dhandapani][a]
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译者：[geekpi](https://github.com/geekpi)
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校对：[校对者ID](https://github.com/校对者ID)
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||||||
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]:http://www.tecmint.com/author/lakshmi/
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[1]:http://www.tecmint.com/fdisk-commands-to-manage-linux-disk-partitions/
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[2]:http://www.tecmint.com/wp-content/uploads/2017/04/List-Linux-Partition-Table.png
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[3]:http://www.tecmint.com/wp-content/uploads/2017/04/List-New-Partition-Table.png
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[4]:http://www.tecmint.com/wp-content/uploads/2017/04/Delete-Linux-Partition.png
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[5]:http://www.tecmint.com/wp-content/uploads/2017/04/Create-Partition-using-Parted.png
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[6]:http://www.tecmint.com/wp-content/uploads/2017/04/Verify-Partition-Details.png
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[7]:http://www.tecmint.com/wp-content/uploads/2017/04/Format-Linux-Partition.png
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[8]:http://www.tecmint.com/author/lakshmi/
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[9]:http://www.tecmint.com/10-useful-free-linux-ebooks-for-newbies-and-administrators/
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[10]:http://www.tecmint.com/free-linux-shell-scripting-books/
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