---
name: "full"
section: "4"
platform: "linux"
package: "man-pages"
version: "6.19-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux", "freebsd"]
url: "https://new.carta.tech/full"
---

# full(4)

always full device

## NAME

full - always full device

## CONFIGURATION

If your system does not have */dev/full* created already, it can be created with the following commands:

```
mknod -m 666 /dev/full c 1 7
chown root:root /dev/full
```

## DESCRIPTION

The file */dev/full* has major device number 1 and minor device number 7.

Writes to the */dev/full* device fail with an **ENOSPC** error. This can be used to test how a program handles disk-full errors.

Reads from the */dev/full* device will return \\0 characters.

Seeks on */dev/full* will always succeed.

## FILES

*/dev/full*

## SEE ALSO

[**mknod**(1)](/mknod/1.md), [**null**(4)](/null/4.md), [**zero**(4)](/zero/4.md)