cramfs
Sign in to saveAlso known as compressed ROM file system
The compressed ROM/RAM file system (or cramfs) is a free (GPL'ed) read-only Linux file system designed for simplicity and space-efficiency. It is mainly used in embedded and small-footprint systems.
Key facts
- File system.name
- Cramfs
- File system.introduction_date
- 2001
- File system.introduction_os
- Linux
- File system.max_volume_size
- <272 MiB
- File system.max_file_size
- 16 MiB
- File system.OS
- Linux, BSD
via Wikipedia infobox
Wikidata facts
Show 2 more facts
- source code repository URL
- github.com/npitre/cramfs-tools
- software version identifier
- 2.2
Sources (3)
via Wikidata · CC0
~2 min read
Article
4 sectionsContents
- Design
- See also
- References
- External links
The compressed ROM/RAM file system (or cramfs) is a free (GPL'ed) read-only Linux file system designed for simplicity and space-efficiency. It is mainly used in embedded and small-footprint systems.
Unlike a compressed image of a conventional file system, a cramfs image can be used as it is, i.e. without first decompressing it. For this reason, some Linux distributions use cramfs for initrd images (Debian 3.1 in particular) and installation images (SUSE Linux in particular), where there are constraints on memory and image size.