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tldr/pages/linux/mkfs.btrfs.md
2025-05-17 05:05:17 +02:00

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# mkfs.btrfs
> Create a BTRFS filesystem.
> Defaults to `raid1`, which specifies 2 copies of a data block spread across 2 different devices.
> More information: <https://btrfs.readthedocs.io/en/latest/mkfs.btrfs.html>.
- Create a btrfs filesystem on a single device:
`sudo mkfs.btrfs {{[-m|--metadata]}} single {{[-d|--data]}} single {{/dev/sdX}}`
- Create a btrfs filesystem on multiple devices with raid1:
`sudo mkfs.btrfs {{[-m|--metadata]}} raid1 {{[-d|--data]}} raid1 {{/dev/sdX /dev/sdY /dev/sdZ ...}}`
- Set a label for the filesystem:
`sudo mkfs.btrfs {{[-L|--label]}} "{{label}}" {{/dev/sdX /dev/sdY ...}}`
- Overwrite existing filesystem if one is detected:
`sudo mkfs.btrfs {{[-f|--force]}} {{/dev/sdX}}`