Linux down hard drive partition

1 fdisk-l view hard disk and partition information

The commands under my system (ArchLinux) have the following effects:

From the above picture can be learned that the system only mount 1 hard drives, named SDA, it has 2 primary partitions, SDA1 and sda2, as for why so named, you can refer to my other blog: Linux mount

It is obvious that the drive has a capacity of 931.5GB, a total of 1,953,525,168 sectors (sectors), of which 2048-2099200 of the fan is differentiated to the SDA1 partition, 2101248-1953525167 fan is differentiated to the sda2 partition,

Their capacity is 1GB and 930.5GB respectively, indicating that the hard disk capacity has been fully mounted, there is no free space.

2 start operating the hard drive

Command: FDISK/DEV/SDX

As follows:

Here you can enter m to see the various operation instructions, as follows:

Here are a few common parameters:

D Delete Partition

L List partition types

M list Help

n Add a partition

P List Partitions

Q Do not save exit

t change the partition type

W Save after exiting

3 Updating the kernel hard disk partition table

Command: Cat/proc/partitions

Function: View the partition information identified by the kernel

After using the Fdisk partition, you need to see if the kernel partition information is consistent with our operations, as follows:

If there are no changes to the partition, then we do not have to restart the kernel, just use the following command to re-read the partition information (refresh):

#partprobe/DEV/SDX

4 Formatting partitions

Once the partition is complete, it is necessary to assign a file system to each partition, which describes the more common command mkfs, which is in the following format:

MKFS [-v] [-t fstype] [-options] Device

-v: Verbose display mode

-t fstype: Select a file system, Linux default value is Ext2, can be specified as EXT2,EXT3,EXT4,MSDOS,FAT32,VFAT, etc.

-options: Some other parameters, such as-C, indicates that the disk bad track condition is checked during the formatting process, and the-l Bad_blocks_file indicates that the block information of the bad track is added to the Bad_blocks_file file

Device: Hard disk partitions, such as/DEV/SDA1

For example:

Mkfs-t ext4/dev/sda1

This command can be written mkfs.ext4/dev/sda1

At this point, the disk partition basically ends, then can be mounted and other operations.

Linux down hard drive partition