ubuntu 添加新硬盘

查看硬盘：

# fdisk -l

...

Disk /dev/sdb: 274.9 GB, 274877906944 bytes

255 heads, 63 sectors/track, 33418 cylinders, total     536870912 sectors

Units = sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk /dev/sdb doesn't contain a valid partition table

可以看到，有一块大小为256G的磁盘未初始化

格式化硬盘（如果需要多个分区，请先创建磁盘分区）：

# mkfs.ext4 /dev/sdb

mke2fs 1.42.9 (4-Feb-2014)

/dev/sdb is entire device, not just one partition!

Proceed anyway? (y,n) y

Filesystem label=

OS type: Linux

Block size=4096 (log=2)

Fragment size=4096 (log=2)

Stride=0 blocks, Stripe width=0 blocks

16777216 inodes, 67108864 blocks

3355443 blocks (5.00%) reserved for the super user

First data block=0

Maximum filesystem blocks=4294967296

2048 block groups

32768 blocks per group, 32768 fragments per group

8192 inodes per group

Superblock backups stored on blocks:

    32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,

    4096000, 7962624, 11239424, 20480000, 23887872

Allocating group tables: done

Writing inode tables: done

Creating journal (32768 blocks): done

Writing superblocks and filesystem accounting information: done

查看磁盘的UUID：

# blkid

/dev/sda1: UUID="05003145-9b91-4943-aaa8-22cb496fd4d8" TYPE="ext4"

/dev/sda5: UUID="ca0012ba-2bf1-4d0b-94d3-3e4043746a14" TYPE="swap"

/dev/sdb: UUID="e23a1c1e-8d91-4df8-8fba-f0656a1080ab" TYPE="ext4"

记录下/dev/sdb（刚才格式化的分区）的UUID。

注意：你看到的UUID的值与例子不同

编辑/etc/fstab

# editor /etc/fstab

添加以下行

UUID=e23a1c1e-8d91-4df8-8fba-f0656a1080ab   /home   ext4    defaults,errors=remount-ro  0   1

注意：UUID替换为上一步你获取到的值

P.S./home为你要挂载的目标目录

现在重启电脑，应用新的磁盘配置

# reboot

查看磁盘配置：

# df -h

Filesystem      Size  Used Avail Use% Mounted on

/dev/sda1       8.8G  1.3G  7.1G  15% /

none            4.0K     0  4.0K   0% /sys/fs/cgroup

udev            8.2G  4.0K  8.2G   1% /dev

tmpfs           1.7G  492K  1.7G   1% /run

none            5.0M  8.0K  5.0M   1% /run/lock

none            8.2G     0  8.2G   0% /run/shm

none            100M     0  100M   0% /run/user

/dev/sdb        252G   60M  239G   1% /home

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ubuntu 添加新硬盘

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