# mke2fs
> Creates a Linux filesystem inside a partition.
- Create an ext2 filesystem in partition 1 of device b (`sdb1`):
`mkfs.ext2 {{/dev/sdb1}}`
- Create an ext3 filesystem in partition 1 of device b (`sdb1`):
`mkfs.ext3 {{/dev/sdb1}}`
- Create an ext4 filesystem in partition 1 of device b (`sdb1`):
`mkfs.ext4 {{/dev/sdb1}}`
