mkfs.ext4

`mkfs.ext4` is a command used in Linux systems to format a storage device, such as a hard drive or USB stick, with the ext4 file system. This process prepares the device to store files and data efficiently, organizing the data in a structure that the operating system can manage. Think of it as setting up a new filing cabinet, making sure all drawers and folders are ready for use. Once formatted with `mkfs.ext4`, the device can be mounted and used to save, retrieve, and manage files reliably.