---
name: "check-bios-nx"
section: "1"
platform: "linux"
package: "cpu-checker"
version: "0.7-1.4"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/check-bios-nx"
---

# check-bios-nx(1)

determine if BIOS has blocked CPU's NX capabilities

## NAME

**check-bios-nx** - determine if BIOS has blocked CPU's NX capabilities

## SYNOPSIS

**check-bios-nx \[-h\|--help\] \[--verbose\]**

## OPTIONS

**-h\|--help** - display a help message and exit

**--verbose** - explain in detail what has been detected

## DESCRIPTION

This program attempts to determine if the running x86-based CPU has NX capabilities (regardless of it being disabled by the BIOS).

If the CPU is NX-capable but the nx bit is missing from flags, exit 1 (i.e. "BIOS settings need changing"), otherwise exit 0 (i.e. "nothing wrong with BIOS")

## MORE INFORMATION

*http://launchpad.net/cpu-checker*

## AUTHOR

This manpage was written by Dustin Kirkland \<kirkland@canonical.com\> for Ubuntu systems (but may be used by others).  Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 3 published by the Free Software Foundation.

On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL-3.