Linux创建主分区扩展分区fdisk，格式化分区mkfs，挂载分区mount

悠悠 2022-04-17 04:53 379阅读 0赞

> 这里对Linux创建扩展分区和逻辑分区，以及格式化分区和挂载分区进行一个详细的介绍，希望能帮助到你们！

# 1.Linux 创建扩展分区以及逻辑分区 #

**\[root@localhost ~\]\# fdisk /dev/sdb //进入要分配的磁盘**

WARNING: DOS-compatible mode is deprecated. It’s strongly recommended to  
switch off the mode (command ‘c’) and change display units to  
sectors (command ‘u’).

**Command (m for help): n //创建分区**  
Command action  
e extended  
p primary partition (1-4)  
**e //创建扩展分区**  
Partition number (1-4): 4 //分区号  
First cylinder (5121-10240, default 5121): //分区开始柱面，enter默认  
Using default value 5121  
Last cylinder, +cylinders or +size\{K,M,G\} (5121-10240, default 10240): //分区结束柱面  
Using default value 10240

**Command (m for help): p //打印分区情况**

Disk /dev/sdb: 10.7 GB, 10737418240 bytes  
64 heads, 32 sectors/track, 10240 cylinders  
Units = cylinders of 2048 \* 512 = 1048576 bytes  
Sector size (logical/physical): 512 bytes / 512 bytes  
I/O size (minimum/optimal): 512 bytes / 512 bytes  
Disk identifier: 0xb92c060c

Device Boot Start End Blocks Id System  
/dev/sdb1 1 5120 5242864 83 Linux  
/dev/sdb4 5121 10240 5242880 5 Extended

**Command (m for help): n //创建分区**

Command action  
l logical (5 or over)  
p primary partition (1-4)  
**l //创建逻辑分区**  
First cylinder (5121-10240, default 5121): //分区开始柱面，enter默认

Using default value 5121  
Last cylinder, +cylinders or +size\{K,M,G\} (5121-10240, default 10240): 8192

**Command (m for help): n //再创建一个分区**

Command action  
l logical (5 or over)  
p primary partition (1-4)  
**l //再创建一个逻辑分区**

First cylinder (8193-10240, default 8193): //分区开始柱面，enter默认

Using default value 8193  
Last cylinder, +cylinders or +size\{K,M,G\} (8193-10240, default 10240): //分区结束柱面

Using default value 10240

**Command (m for help): p //打印分区表进行查看**

Device Boot Start End Blocks Id System  
/dev/sdb1 1 5120 5242864 83 Linux  
/dev/sdb4 5121 10240 5242880 5 Extended  
/dev/sdb5 5121 8192 3145712 83 Linux  
/dev/sdb6 8193 10240 2097136 83 Linux

**Command (m for help): w //w保存上面设置，q退出而不报错**  
The partition table has been altered!

Calling ioctl() to re-read partition table.

WARNING: Re-reading the partition table failed with error 16: Device or resource busy.  
The kernel still uses the old table. The new table will be used at  
the next reboot or after you run partprobe(8) or kpartx(8)  
Syncing disks.

# 2.Linux 格式化分区 #

**\[root@localhost ~\]\# mkfs.ext4 /dev/sdb5 //格式化**  
mke2fs 1.41.12 (17-May-2010)  
Could not stat /dev/sdb5 — No such file or directory //这里注意一下，先执行partprobe命令让系统内核重读分区表，如果报错要reboot一下

**\[root@localhost ~\]\# mkfs.ext4 /dev/sdb5 //格式化/dev/sdb5**  
mke2fs 1.41.12 (17-May-2010)  
Filesystem label=  
OS type: Linux  
Block size=4096 (log=2)  
Fragment size=4096 (log=2)  
Stride=0 blocks, Stripe width=0 blocks  
196608 inodes, 786428 blocks  
39321 blocks (5.00%) reserved for the super user  
First data block=0  
Maximum filesystem blocks=805306368  
24 block groups  
32768 blocks per group, 32768 fragments per group  
8192 inodes per group  
Superblock backups stored on blocks:  
32768, 98304, 163840, 229376, 294912

Writing inode tables: done  
Creating journal (16384 blocks): done  
Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 28 mounts or  
180 days, whichever comes first. Use tune2fs -c or -i to override.  
**\[root@localhost ~\]\# mkfs.ext4 /dev/sdb6 //格式化/dev/sdb6**  
mke2fs 1.41.12 (17-May-2010)  
Filesystem label=  
OS type: Linux  
Block size=4096 (log=2)  
Fragment size=4096 (log=2)  
Stride=0 blocks, Stripe width=0 blocks  
131072 inodes, 524284 blocks  
26214 blocks (5.00%) reserved for the super user  
First data block=0  
Maximum filesystem blocks=536870912  
16 block groups  
32768 blocks per group, 32768 fragments per group  
8192 inodes per group  
Superblock backups stored on blocks:  
32768, 98304, 163840, 229376, 294912

Writing inode tables: done  
Creating journal (8192 blocks): done  
Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 33 mounts or  
180 days, whichever comes first. Use tune2fs -c or -i to override.

# 3.Linux 进行分区挂载 #

### 先创建两个挂载点disk01，disk02 ###

**\[root@localhost var\]\# mkdir /disk01  
\[root@localhost var\]\# mkdir /disk02  
\[root@localhost var\]\# mount /dev/sdb5 /disk01 //挂载分区  
\[root@localhost var\]\# mount /dev/sdb6 /disk02  
\[root@localhost var\]\# df -h**  
Filesystem Size Used Avail Use% Mounted on  
/dev/mapper/VolGroup-lv\_root  
50G 3.9G 43G 9% /  
tmpfs 940M 72K 940M 1% /dev/shm  
/dev/sda1 485M 38M 423M 9% /boot  
/dev/mapper/VolGroup-lv\_home  
45G 532M 43G 2% /home  
/dev/sdb5 3.0G 69M 2.8G 3% /disk01  
/dev/sdb6 2.0G 35M 1.9G 2% /disk02

*  【注】这里会发现如果电脑重新启动之后，挂载的分区都会消失，所以必须在配置文件中加入配置  
    \[root@localhost var\]\# vi /etc/fstab //添加到配置文件，这里略  
    最后ESC Shift+： wq 保存退出即可

## 再重启系统看看吧！希望能帮助到你哦！！！ ##

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