---
name: "mkexfatfs"
section: "8"
platform: "linux"
package: "exfat-utils"
version: "1.4.0-4"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/mkexfatfs"
---

# mkexfatfs(8)

create an exFAT file system

## NAME

**mkexfatfs** - create an exFAT file system

## SYNOPSIS

**mkexfatfs** \[ **-i** *volume-id* \] \[ **-n** *volume-name* \] \[ **-p** *partition-first-sector* \] \[ **-s** *sectors-per-cluster* \] \[ **-V** \] *device*

## DESCRIPTION

**mkexfatfs** creates an exFAT file system on a block device. *device* is a special file corresponding to the partition on the device. Note that if this is an MBR partition then the file system type should be set to 0x07 (NTFS/exFAT) otherwise other operating systems may refuse to mount the file system.

## OPTIONS

Command line options available:

- **-i** *volume-id*

  A 32-bit hexadecimal number. By default a value based on current time is set.

- **-n** *volume-name*

  Volume name (label), up to 15 characters. By default no label is set.

- **-p** *partition-first-sector*

  First sector of the partition starting from the beginning of the whole disk. exFAT super block has a field for this value but in fact it's optional and does not affect anything. Default is 0.

- **-s** *sectors-per-cluster*

  Number of physical sectors per cluster (cluster is an allocation unit in exFAT). Must be a power of 2, i.e. 1, 2, 4, 8, etc. Cluster size can not exceed 32 MB. Default cluster sizes are: 4 KB if volume size is less than 256 MB, 32 KB if volume size is from 256 MB to 32 GB, 128 KB if volume size is 32 GB or larger.

- **-V**

  Print version and copyright.

## EXIT CODES

Zero is returned on successful creation. Any other code means an error.

## AUTHOR

Andrew Nayenko

## SEE ALSO

[**mkfs**(8)](/mkfs/8.md),[**fdisk**(8)](/fdisk/8.md)