---
name: "mkcramfs"
section: "8"
platform: "linux"
package: "cramfsprogs"
version: "1.1-6"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/mkcramfs"
---

# mkcramfs(8)

make a compressed ROM file system

## NAME

mkcramfs - make a compressed ROM file system

## SYNOPSIS

**mkcramfs** \[**-h**\] \[**-b** *blksize*\] \[**-e** *edition*\] \[**-i** *file*\] \[**-n** *name*\] *dirname outfile*

## DESCRIPTION

This manual page documents briefly the **mkcramfs** command. This manual page was written for the **Debian GNU/Linux** distribution (but may be used by others), because the original program does not have a manual page.

**mkcramfs** constructs a **CramFs** from the contents of *dirname*. The image of the resulting file system is placed in *outfile*.

## OPTIONS

- **-h**

  Give a brief help message.

- **-E**

  Make all warnings errors (non-zero exit status).

- **-b *blksize***

  Set the block size of the generated file system.

- **-e *edition***

  Set the edition number (part of fsid).

- **-i *file***

  Insert a file image into the filesystem (requires Linux \>= 2.4.0).

- **-n *name***

  Set the name of the **CramFs** filesystem.

- **-p**

  Pad by 512 bytes for boot code.

- **-s**

  Sort directory entries (old option, ignored).

- **-v**

  Turn on verbose mode.

- **-z**

  Make explicit holes (requires Linux \>= 2.3.39).

## AUTHOR

**mkcramfs** is written by Linus Torvalds and Daniel Quinlan.  Manual page added by Herbert Xu.