Version 5 (modified by Martin Decky, 15 years ago) ( diff )

User's Guide

  1. Quick Start
  2. Console
  3. Shell
  4. Kernel Console
  5. Building From Source

Quick Start

To try out HelenOS, download the latest IA-32 ISO image from the download page. Install QEMU. In the directory where you downloaded the ISO image run

qemu -m 32 -cdrom image.iso

You can also use a different emulator. Just make sure it is configured to emulate a Pentium 4 or later CPU or HelenOS won't boot and it will display a red error message.


Press the F1-F11 keys to switch between individual virtual consoles. Pressing F12 will take you to the kernel console.


Type help (+Enter) to get a list of built-in commands.

Kernel Console

The kernel console is controlled via a command line. The continue command will take you back to the user-space console. help will show a list of commands. The command line supports completion (Tab key) and history (up and down arrow keys).

Building From Source

Checkout the latest sources from our central Bazaar repository

bzr checkout bzr:// HelenOS

Note: To get versions older than 0.4.1 you have to access the original Subversion repository

svn checkout svn:// HelenOS

Use our script to install a supported cross-compiler toolchain

cd HelenOS/contrib
./ ia32

Go to the source root and start the build process

cd ../..

Load preconfigured defaults for the platform you want to build for and select Done. HelenOS will now be built.

Important note: If you don't compile using the supported toolchain, your build may well fail.

Note: See TracWiki for help on using the wiki.