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Format partition with the ext4 file system

The ext4 filesystem is known as the forth extended filesystem, and is the default file system on many Linux distributions.

To Format a partition with the ext4 filesystem run the following command:

$ sudo mkfs.ext4 /dev/sdc1

Replace sdc1 with the relevent disk and partition that you want to format. In this example, the disk is /dev/sdc, and its the first partition on that disk. Make sure you get the drive and partition correct or you may wipe something that you dont want to.

Example:

$ sudo mkfs.ext4 /dev/sdc1
mke2fs 1.43.4 (31-Jan-2017)
Creating filesystem with 261888 4k blocks and 65536 inodes
Filesystem UUID: 15d8146f-bcb3-414c-864f-5100bb4b0bf8
Superblock backups stored on blocks:
        32768, 98304, 163840, 229376

Allocating group tables: done
Writing inode tables: done
Creating journal (4096 blocks): done
Writing superblocks and filesystem accounting information: done

$

If the parition already has a filesystem on it, you should get a warning such as this:

$ sudo mkfs.ext4 /dev/sdc1
mke2fs 1.43.4 (31-Jan-2017)
/dev/sdc1 contains a ext4 file system
        created on Sun Jun  4 22:59:38 2017
Proceed anyway? (y,N)

Press “y” and enter to confirm you want to overwrite the file system.



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