Linux Essentials (disk partitioning)

Linux disk partitioning to file system creation

First understand the basic structure of the disk

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The partition command to use:

Fdisk: Up to 15 partitions can be managed for a hard drive

Syntax: fdisk [Option][device]

P:print, show existing partitions n:new, create D:delete, delete w:write, write to disk and exit

Q:quit, discard Update and exit M: Get help L: List partition ID T: Adjust partition ID

To start a disk partition:

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Here you can see two hard disks sda1 and Sda2, the first hard drive sda1 is installed system. The sda2 hard disk is not partitioned.

Enter FDISK/DEV/SDA and then enter to partition the hard drive. Such as

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Enter N to new partition, then enter P return to create a new primary partition.

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This is required to select the partition number in 1-4, enter 3 return car

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Firstcylinder (7859-15665, default 7859): Here is the cylinder to set the start of the partition, directly enter the default can be selected, enter after the

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Lastcylinder, +cylinders or +size{k,m,g} (7859-15665, default 15665):

Here is the set partition end cylinder, +3g means starting from the starting cylinder backward 3G end, is also set the partition size to 3G, enter +3g after the return, as shown in

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Here you can enter p to see if the partition was successful, enter P carriage, such as: Display partition success

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Next, check to see if the kernel has identified the new partition: # Cat/proc/partations

(Execute commands from top to bottom until the kernel reads to the new partition)

Notifies the kernel to re-read the hard disk partition table:

Partx-a/dev/device

-N m:n

kpartx-a/dev/device Note (CentOS 5: Using Partprobe [/dev/device])

-f:force

Chapter Two: Creation of file systems (virtual file system for Linux)

Learn about the relationships between file systems and Linux virtual file systems wear pieces

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Commands you need to know to create a file system:

MKFS command: # MKFS. Fs_type/dev/device [OPTION]:-l ' LABEL ': Setting the volume label

# Mkfs-tfs_type/dev/device

MKE2FS : Ext Series File system dedicated management tool

Blkid : Block Device properties Information view Blkid [OPTION] ... [DEVICE]

DUMPE2FS :-H: View Super block information

File System Detection:

Fsck:file System CheCk

Fsck. Fs_type

fsck-t fs_type-a: Auto Fix error-r: Interactive fix error

Note:fs_type Be sure to have the same file type as the partition;

e2fsck : Ext Series file-specific detection and repair tool

- y : Automatic answer is yes;

- F : Forced repair;

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Disk partition is successful, the following will be formatted

Format the disk with the command MKE2FS, formatted as a EXT4 file type.

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Linux Essentials (disk partitioning)