Disk partitioning and file system creation and mounting under Linux CentOS

Disk partitioning and file system creation and mounting under Linux CentOS

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  2013-12-11 11:06

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The MBR (Master Boot Record) is a traditional partitioning mechanism that is applied to the vast majority of PC devices that use the BIOS.

1.MBR supports 32bit and 64bit systems

2.MBR limited number of supported partitions

3.MBR only supports hard drives up to 2T, more than 2T drives can only use 2T space (using other methods)

1. Primary partition: Up to 4 primary partitions can be created (available)

2. Extended partition: An extended partition occupies a primary partition location (not available, can be converted into logical partition)

3. Logical partitioning: Linux supports up to 63 IDE partitions and 15 SCSI partitions (available)

Fdisk Partitioning tool: Fdisk is an old partition tool from IBM that supports most operating systems, and almost all Linux distributions are equipped with FDISK, which is an MBR-based partitioning tool.

• Disk Partitioning:

1. Go to root.

2. Enter Fdisk-l

disk/dev/sdb:8589 MB not partitioned in the figure, 8589934592 bytes

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Is the newly mounted hard disk to be operated on.

3. Partition the SDB, enter: Fdisk/dev/sdb display input m to see help in the second picture below.

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• To create a primary partition:

n Create a new partition

p View current partition

W Save changes and exit

Enter P return (this time to create a primary partition)

Enter the partition number, enter 1 to return the car

then return .

set the size of this partition (for example, enter +5g; unit k,m,g) and return to

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enter P return to show that a primary partition has been seen.

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• Create an extended partition:

  P style= "margin-top:0px;margin-bottom:25px;padding:0px;" >      Enter n return

       Enter e carriage return

       Enter the partition number, Enter 2 return car (1 area code has been used previously)

        return to

        Enter the size of the extended partition to be allocated (if you want to use all remaining space, you do not need to enter, direct carriage)

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Enter p to display the partition

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• To partition an extension into a logical partition:

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---------------------------------------------------------------------------

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Save Settings:

Enter W return, which shows the end of the following partition.

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• To create a file system:

The operating system manages files and data through the file system, the disk or partition needs to create a file system before it can be used for the operating system, and the process of creating a file system is called formatting.

Input: Mke2fs-t ext4/dev/sdb1 (Create file system for SDB1 primary partition with command MKE2FS)

Input: Mke2fs-t EXT4/DEV/SDB5 (Create file system for SDB5 logical partition)

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-------------------------------------------------------------------------

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• Mount File System:

  Input: Mount/dev/sdb1/mnt (mount the SDB1 primary partition on the MNT)

  Input: mount/dev/sdb5/mnt (attach SDB5 logical partition to MNT)

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This article from "Dongdong Homeland" blog, declined reprint!

Disk partitioning and file system creation and mounting under Linux CentOS