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.


$ 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.