TLDR
Enter a command. For example: raspi config, notify send, phpdismod.

mkfs.ext4

 
Creates an ext4 filesystem inside a partition. More information: https://manned.org/mkfs.ext4.
 
  • Create an ext4 filesystem inside partition 1 on device b (sdb1):
     
    sudo mkfs.ext4 {{/dev/sdb1}}
     
  • Create an ext4 filesystem with a volume-label:
     
    sudo mkfs.ext4 -L {{volume_label}} {{/dev/sdb1}}
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