Recompile A FreeBSD Kernel With A Custom Configuration

This tutorial by user anismaj shows us how to recompile your FreeBSD kernel with a custom configuration.

Original post:

FreeBSD is a free Unix-like operating system descended from Research Unix via the Berkeley Software Distribution (BSD). Although for legal reasons FreeBSD cannot use the Unix trademark, it is a direct descendant of BSD, which was historically also called “BSD Unix” or “Berkeley Unix”. The first version of FreeBSD was released in 1993, and today FreeBSD is the most widely used open-source BSD distribution, accounting for more than three-quarters of all installed systems running open-source BSD derivatives.

FreeBSD has similarities with Linux, with two major differences in scope and licensing: FreeBSD maintains a complete operating system, i.e. the project delivers kernel, device drivers, userland utilities and documentation, as opposed to Linux delivering a kernel and drivers only and relying on third-parties for system software and FreeBSD source code is generally released under a permissive BSD license as opposed to the copyleft GPL.

It uses the GENERIC kernel by default. FreeBSD’s kernel provides support for some essential tasks such as managing processes, communication, booting and filesystems. In this article, we will show you how you can recompile a FreeBSD kernel with a custom configuration.

Some Features of FreeBSD and kernel

From the different features we can list the following ones:

  • FreeBSD 10.0 now supports a truly tickless kernel, enhancing battery performance on laptops and general resource effectiveness in virtual machines.
  • AMD GPUs kernel mode setting supports the use of newer xf86-video-ati drivers and AMD GPUs
  • FreeBSD 10.0 brings with it support for ZFS TRIM and it also supports LZ4 compression support which compresses much better (up to 50%) than the default LZJB compression
  • BSD-kernel are not stand-alone kernels but are developed as being part of a whole. Of course, this is merely a philosophical point of view and not a technical one, but this give system coherence


As prerequisites for this article you need to need just to have a one FreeBSD 10.1 Droplet to be able to use the following commands; we assume that you are a FreeBSD user.

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Difference between FreeBSD versions

New to FreeBSD? Make sure you are choosing the right version suitable for you, if you plan on installing FreeBSD. Thanks to user Chris S for the tip.

What is the difference between the three FreeBSD versions (Current, Release and Stable)?

  • Current is the latest “beta” software.This is what the developers are working on mainly. It has minimal testing, basically if it compiles they’ll push it into the repository. If you’re interested in developing or testing development version this is what you’re looking for.
  • Release is the software as it first appeared under a certain release version.This is the software exactly as it was “released”. If you’re running 9.3-RELEASE then it is that version as originally released, without base or kernel updates. If you update a RELEASE version it will append a revision tag. This is typically what people run when they used precompiled versions of FreeBSD.
  • Stable is the latest “supported” software within a version branch.This is tested versions of the software published between releases. It has more rigerous testing than the Current branch, but will change as new fixes and sometimes features are added. It doesn’t have the same feature stability a release.

Original post:

PC-BSD 10.1.2 Released

The developers of PC-BSD have released version 10.1.2! This update comes with several changes geared towards those who are keen on security.

Original announcement:


The PC-BSD team is pleased to announce the availability of the next PC-BSD / TrueOS quarterly release, 10.1.2.

PC-BSD 10.1.2 Notable Changes:

  •  New PersonaCrypt Utility
    • Allows moving all of users $HOME directory to an encrypted USB Drive. This drive can be connected at login, and used across different systems
    • Stealth Mode — Allows login to a blank $HOME directory, which is encrypted with a one-time GELI key. This $HOME directory is then discarded at logout, or rendered unreadable after a reboot
  • Tor mode — Switch firewall to running transparent proxy, blocking all traffic except what is routed through Tor.
  • Migrated to IPFW firewall for enabling VIMAGE in 10.2
  • Added sound configuration via the first boot utility
  • Support for encrypted iSCSI backups via Life-Preserver, including support for bare-metal restores via installer media
  • New HTML handbook, updated via normal package updates
  • Media Center support allowing direct login to Kodi and PlexHomeTheater for the 10ft user experience
  • Switch to new AppCafe interface, with remote support via web-browser
  • Improvements to Online Updater, along with GRUB nested menus for Boot-Environments
  • Migrate all ports to using LibreSSL instead of OpenSSL
  • Switch from NTPD to OpenNTPD
  • Lumina desktop 0.8.4
  • Chromium 42.0.2311.135
  • Firefox 38.0
  • NVIDIA Driver 346.47
  • Pkg 1.5.2


Users currently running the 10.1.1 release can now apply the updates via their Update Manager utility. Users running TrueOS or CLI can start the update with the following command:

# pc-updatemanager pkgupdate

Getting media

10.1.2 DVD/USB media can be downloaded from the following URL via HTTP or Torrent. http://?www?.pcbsd?.org/?e?n?/?d?o?w?n?l?o?a?d?.?h?tml

Reporting Bugs

Found a bug in 10.1.2? Please report it (with as much detail as possible) to our bugs database. https://?bugs?.pcbsd?.org

Contacting Us

bsdtalk253 – George Neville-Neil

Will Backman provides us yet another bsdtalk, this time with George Neville-Neil’s most recent book.

An interview with George Neville-Neil about the recently published 2nd edition of The Design and Implementation of the FreeBSD Operating System.

File Info: 30Min, 15MB

Mp3 Link:
Ogg Link:

Original post:

FreeBSD Errata Notice FreeBSD-EN-15:04.freebsd-update

Allan Jude has issued us with a FreeBSD Errata Notice. Please check the article to take proper corrective measures.

Original post:

Hash: SHA512

FreeBSD-EN-15:04.freebsd-update Errata Notice
The FreeBSD Project

Topic: freebsd-update(8) does not ensure the previous upgrade was

Category: core
Module: freebsd-update
Announced: 2015-05-13
Credits: Allan Jude
Affects: All supported versions of FreeBSD.
Corrected: 2015-05-13 22:36:00 UTC (stable/10, 10.1-STABLE)
2015-05-13 22:52:35 UTC (releng/10.1, 10.1-RELEASE-p10)
2015-05-13 22:36:52 UTC (stable/9, 9.3-STABLE)
2015-05-13 22:52:51 UTC (releng/9.3, 9.3-RELEASE-p14)
2015-05-13 22:39:29 UTC (stable/8, 8.4-STABLE)
2015-05-13 22:52:51 UTC (releng/8.4, 8.4-RELEASE-p28)

For general information regarding FreeBSD Errata Notices and Security
Advisories, including descriptions of the fields above, security
branches, and the following sections, please visit

I. Background

The freebsd-update(8) utility is used to apply binary patches to FreeBSD
systems installed from official release images, as an alternative to
rebuilding from source. A freebsd-update(8) build server generates the
signed update packages, consisting of an index of files and directories
with checksums before the update, a set of binary patches, and an
index of files and directories with checksums after the update. The
client downloads the indexes, verifies the signatures and checksums,
then downloads and applies the required patches.
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Linux, Solaris, and FreeBSD driver 346.72 (long-lived branch release)

351px-Nvidia_logoNvidia user aplattner announces driver support on FreeBSD for the GeForce GPU. Read below for more details:

Release highlights since 346.59:

  • Added support for the following GPU:
    • GeForce GPU
  • Fixed a bug causing loss of stereo synchronization in certain Quadro Sync framelock configurations.
  • Fixed Pixel Buffer Object operations when row length is less than width. GL_[UN]PACK_ROW_LENGTH can be set to a value lower than the width of the operation being carried out. The OpenGL specification allows for this (the source or destination lines will be overlapping). Previously, our implementation of Pixel Buffer Objects did not support this case and would throw an error.
  • Fixed a rare deadlock condition when running applications that use OpenGL in multiple threads on a Quadro GPU.

[README | Linux x86 | Linux x86_64 | Linux ARM | Solaris | FreeBSD x86 | FreeBSD x86_64]

Aaron Plattner
NVIDIA Linux Graphics

Original post:

How To Install FreeBSD 10.1 On A 2006 Macbook

IMG_6085_Win_FreeBSD_OSX_1The folks at Higher Learning show us how to get FreeBSD 10.1 set up on your old 2006 Macbook.

Original post:

A while ago I decided to unretire my 2006 Macbook and turn it into a low powered server. Specifically to run a BBS, but more on that in a later blog post. To get FreeBSD running properly requires a bit of trickery, so i decided to write a little howo to save you some time and effort. For this you will need the following:


  • A FreeBSD install DVD burned with the i386 image as we’re dealing with a 32 bit core duo machine here. If you’re into that sort of think you can also create a FreeBSD USB stick.
  • The OS X Tiger (10.4) Install DVD

Now for the fun part:

  • Insert DVD/USB stick into Macbook and boot
  • Hold down the option key to choose to boot from the DVD/USB stick. The boot media should be displayed as “Windows” by the Mac boot manager
  • Install FreeBSD with default partitions and whichever options you want
  • With 10.1 I kept getting a [Read more…]