Format a partition as ext4.
Section: Format, Label, and Tune
Create an ext4 filesystem
bash
bash
sudo mkfs.ext4 /dev/sdb1Explanation
Format a partition as ext4.
Learn the surrounding workflow
Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.
Related commands
Same sheet · prioritizing Format, Label, and Tune
Set an ext filesystem label
Assign a human-readable label to an ext filesystem.
Show ext filesystem metadata
Inspect features, UUID, mount count, and reserved blocks.
Change reserved blocks percentage
Lower reserved space on large non-root data volumes.