分区的知识

把磁盘sdb的容量用了创建一个分区 /dev/sdb1 ,把这个分区挂载到/mnt

有了硬盘，分区，格式化创建文件系统，挂载

第一步：创建分区

fdisk -cu /dev/sdb

Command (m for help): p

Disk /dev/sdb: 106 MB, 106954752 bytes

64 heads, 32 sectors/track, 102 cylinders, total 208896 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: 0x0c7ada8f

Device Boot      Start         End      Blocks   Id  System

Command (m for help): n

Command action

e   extended

p   primary partition (1-4)

p

Partition number (1-4): 1

First sector (2048-208895, default 2048):

Using default value 2048

Last sector, +sectors or +size{K,M,G} (2048-208895, default 208895):

Using default value 208895

Command (m for help): p

Disk /dev/sdb: 106 MB, 106954752 bytes

64 heads, 32 sectors/track, 102 cylinders, total 208896 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: 0x0c7ada8f

Device Boot      Start         End      Blocks   Id  System

/dev/sdb1            2048      208895      103424   83  Linux

Command (m for help): w

The partition table has been altered!

Calling ioctl() to re-read partition table.

Syncing disks.

第二步：通知系统 /dev/sdb磁盘的分区表修改了  变化了

partprobe /dev/sdb

第三步：格式化创建文件系统

mkfs.ext4 /dev/sdb1

mkfs.ext4 /dev/sdb1

mke2fs 1.41.12 (17-May-2010)

Filesystem label=

OS type: Linux

Block size=1024 (log=0)

Fragment size=1024 (log=0)

Stride=0 blocks, Stripe width=0 blocks

25896 inodes, 103424 blocks

5171 blocks (5.00%) reserved for the super user

First data block=1

Maximum filesystem blocks=67371008

13 block groups

8192 blocks per group, 8192 fragments per group

1992 inodes per group

Superblock backups stored on blocks:

8193, 24577, 40961, 57345, 73729

Writing inode tables: done

Creating journal (4096 blocks): done

Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 21 mounts or

180 days, whichever comes first.  Use tune2fs -c or -i to override.

第四步：让系统不对我们新创建的分区 进行磁盘检查

tune2fs -c 0 -i 0  /dev/sdb1 

tune2fs 1.41.12 (17-May-2010)

Setting maximal mount count to -1

Setting interval between checks to 0 seconds

第五步：挂载 与检查

mount /dev/sdb1 /mnt/

[[email protected] ~]# df -h

Filesystem      Size  Used Avail Use% Mounted on

/dev/sda3       8.8G  1.7G  6.8G  20% /

tmpfs           931M     0  931M   0% /dev/shm

/dev/sda1       190M   40M  141M  22% /boot

/dev/sdb1        94M  1.6M   88M   2% /mnt

第六步：需要永久挂载  开机自动挂载

----挂载命令放入到  /etc/rc.local 文件中

/bin/mount /dev/sdb1 /mnt/