Linux Partition format mount mount

If you have a hard drive, how do you use it for your Linux system?

1. Install the hard drive on the server

2. Partition the hard disk

3. Format the partition

4. Create a directory (mount point) on a Linux system

5. Mount a formatted partition to a directory

Partitioning the hard disk

Fdisk-l View

The absolute path to the Fdisk hard disk device indicates that a hard disk is partitioned, for example:

Fdisk/dev/sdb

d--means to delete a partition

n--means adding a partition

l--indicates that a known partition type is listed

P Print out all the partitions

Q exits the current shell and does not save the previous operation

W Save the previous operation and exit

T change ID----partition type, L can view

To add a partition:

n-------P (primary partition)---------1-4----------First Sector direct carriage return----last sector +2g

N-----E (extended partition)-----2/3/4--------First and Last direct carriage (the rest is placed in the extended partition)

n------L (logical partition)----------5----------

Partprobe refreshes the partition table. In some cases, the partition cannot take effect immediately after it is restarted, but partprobe refreshes the partition table without restarting. will allow the partition to take effect.

Partprobe is used as a standard command after partitioning.

Formatting a partition

Just partition the hard disk is no file system, the purpose of formatting is to give the partition file system

The command is MKFS. The absolute path to the file system partition, such as:

MKFS.EXT4/DEV/SDB1 formats the first partition of SDB into a ext4

MKFS.XFS/DEV/SDB2 format the second partition into XFS

Never format an extended partition/logical partition, and formatting will cause the logical partition to disappear.

Create a directory (mount point) on a Linux system df-th

Mkdir/diskb1

Mount a formatted partition to a directory

Mount/dev/sdb1/diskb1

*******************************

Mount command is temporarily mounted and server reboot is not mounted

If you need to mount permanently, (boot automatically mount):

When the system is powered on, it will mount the storage device according to the contents of the/etc/fstab file.

Vim/etc/fstab

Modify a file

/DEV/SDB1/DISKB1 XFS Defaults 0 0

Mount-a

This command will allow the system to be mounted once in accordance with the/etc/fstab file. If the file is wrong, it will mount the failure, this time, through the error can be seen to write the file is wrong.

So mount-a as a must-knock command after modifying/etc/fstab.

Swap partition: Free

Virtual memory is the swap partition, the swap partition is the virtual memory

The role of virtual memory, memory is not enough when you're on

#虚拟内存 swap, when the memory is low, some programs are stuck in swap.

Free-h/k/m/g

[Email protected] tmp]# free-h

Total used free shared buffers Cached

mem:3.7g 1.5G 2.2G 9.9M 2.7M 434M

-/+ buffers/cache:1.0g 2.7G

swap:0b 0B 0B

P.S.

Memory 384M Character Interface

GUI Page 700M

MKSWAP/DEV/SDB2 format into swap file

Vim/etc/fstab

/DEV/SDB2 swap swap defaults 0 0

MOUNT-A Check that the configuration file is correct

Swapon-a the command on the swap partition mount

Free-h

How to uninstall:

Swapoff/dev/sdb2

Block UUID for Blkid devices

Ls/dev/disk/by-uuid/-L = blkid

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Linux Partition format mount mount