OpenBSD 6.6

XXX Released Oct 17, 2019
Copyright 1997-2019, Theo de Raadt.


Artwork by Natasha Allegri.
  • See the information on the FTP page for a list of mirror machines.
  • Go to the pub/OpenBSD/6.6/ directory on one of the mirror sites.
  • Have a look at the 6.6 errata page for a list of bugs and workarounds.
  • See a detailed log of changes between the 6.5 and 6.6 releases.

  • signify(1) pubkeys for this release:

    openbsd-66-base.pub: RWSvK/c+cFe24BIalifKnqoqdvLlXfeZ9MIj3MINndNeKgyYw5PpcWGn
    openbsd-66-fw.pub: RWSKyzM3wogTrgHkO88MnRiK/yuu8xy2OeIqhnP/uGL/j2IF4I5djMIM
    openbsd-66-pkg.pub: RWSS4lqHZ5ayOFMBPj3leAkE9tCsSWG9OxD6MmAIS5Y3H3tD6F4vP/eF
    openbsd-66-syspatch.pub: RWRQMmZg6mMlSTfHsJH9czeLAvf9e+ViLvkQ4id4dxaQqWU3aX9Cl/W1

All applicable copyrights and credits are in the src.tar.gz, sys.tar.gz, xenocara.tar.gz, ports.tar.gz files, or in the files fetched via ports.tar.gz.


What's New

This is a partial list of new features and systems included in OpenBSD 6.6. For a comprehensive list, see the changelog leading to 6.6.


How to install

Please refer to the following files on the mirror site for extensive details on how to install OpenBSD 6.6 on your machine:


Quick installer information for people familiar with OpenBSD, and the use of the "disklabel -E" command. If you are at all confused when installing OpenBSD, read the relevant INSTALL.* file as listed above!

OpenBSD/alpha:

Write floppy66.fs or floppyB66.fs (depending on your machine) to a diskette and enter boot dva0. Refer to INSTALL.alpha for more details.

Make sure you use a properly formatted floppy with NO BAD BLOCKS or your install will most likely fail.

OpenBSD/amd64:

If your machine can boot from CD, you can write install66.iso or cd66.iso to a CD and boot from it. You may need to adjust your BIOS options first.

If your machine can boot from USB, you can write install66.fs or miniroot66.fs to a USB stick and boot from it.

If you can't boot from a CD, floppy disk, or USB, you can install across the network using PXE as described in the included INSTALL.amd64 document.

If you are planning to dual boot OpenBSD with another OS, you will need to read INSTALL.amd64.

OpenBSD/arm64:

Write miniroot66.fs to a disk and boot from it after connecting to the serial console. Refer to INSTALL.arm64 for more details.

OpenBSD/armv7:

Write a system specific miniroot to an SD card and boot from it after connecting to the serial console. Refer to INSTALL.armv7 for more details.

OpenBSD/hppa:

Boot over the network by following the instructions in INSTALL.hppa or the hppa platform page.

OpenBSD/i386:

If your machine can boot from CD, you can write install66.iso or cd66.iso to a CD and boot from it. You may need to adjust your BIOS options first.

If your machine can boot from USB, you can write install66.fs or miniroot66.fs to a USB stick and boot from it.

If you can't boot from a CD, floppy disk, or USB, you can install across the network using PXE as described in the included INSTALL.i386 document.

If you are planning on dual booting OpenBSD with another OS, you will need to read INSTALL.i386.

OpenBSD/landisk:

Write miniroot66.fs to the start of the CF or disk, and boot normally.

OpenBSD/loongson:

Write miniroot66.fs to a USB stick and boot bsd.rd from it or boot bsd.rd via tftp. Refer to the instructions in INSTALL.loongson for more details.

OpenBSD/luna88k:

Copy 'boot' and 'bsd.rd' to a Mach or UniOS partition, and boot the bootloader from the PROM, and then bsd.rd from the bootloader. Refer to the instructions in INSTALL.luna88k for more details.

OpenBSD/macppc:

Burn the image from a mirror site to a CDROM, and power on your machine while holding down the C key until the display turns on and shows OpenBSD/macppc boot.

Alternatively, at the Open Firmware prompt, enter boot cd:,ofwboot /6.6/macppc/bsd.rd

OpenBSD/octeon:

After connecting a serial port, boot bsd.rd over the network via DHCP/tftp. Refer to the instructions in INSTALL.octeon for more details.

OpenBSD/sparc64:

Burn the image from a mirror site to a CDROM, boot from it, and type boot cdrom.

If this doesn't work, or if you don't have a CDROM drive, you can write floppy66.fs or floppyB66.fs (depending on your machine) to a floppy and boot it with boot floppy. Refer to INSTALL.sparc64 for details.

Make sure you use a properly formatted floppy with NO BAD BLOCKS or your install will most likely fail.

You can also write miniroot66.fs to the swap partition on the disk and boot with boot disk:b.

If nothing works, you can boot over the network as described in INSTALL.sparc64.


How to upgrade

If you already have an OpenBSD 6.5 system, and do not want to reinstall, upgrade instructions and advice can be found in the Upgrade Guide.


Notes about the source code

src.tar.gz contains a source archive starting at /usr/src. This file contains everything you need except for the kernel sources, which are in a separate archive. To extract:

# mkdir -p /usr/src
# cd /usr/src
# tar xvfz /tmp/src.tar.gz

sys.tar.gz contains a source archive starting at /usr/src/sys. This file contains all the kernel sources you need to rebuild kernels. To extract:

# mkdir -p /usr/src/sys
# cd /usr/src
# tar xvfz /tmp/sys.tar.gz

Both of these trees are a regular CVS checkout. Using these trees it is possible to get a head-start on using the anoncvs servers as described here. Using these files results in a much faster initial CVS update than you could expect from a fresh checkout of the full OpenBSD source tree.


Ports Tree

A ports tree archive is also provided. To extract:

# cd /usr
# tar xvfz /tmp/ports.tar.gz

Go read the ports page if you know nothing about ports at this point. This text is not a manual of how to use ports. Rather, it is a set of notes meant to kickstart the user on the OpenBSD ports system.

The ports/ directory represents a CVS checkout of our ports. As with our complete source tree, our ports tree is available via AnonCVS. So, in order to keep up to date with the -stable branch, you must make the ports/ tree available on a read-write medium and update the tree with a command like:

# cd /usr/ports
# cvs -d anoncvs@server.openbsd.org:/cvs update -Pd -rOPENBSD_6_6

[Of course, you must replace the server name here with a nearby anoncvs server.]

Note that most ports are available as packages on our mirrors. Updated ports for the 6.6 release will be made available if problems arise.

If you're interested in seeing a port added, would like to help out, or just would like to know more, the mailing list ports@openbsd.org is a good place to know.

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