Openbsd Upgrade Guide: 4.0 to 4.1

   
[3.4 -> 3.5]
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[3.5 -> 3.6]
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[3.6 -> 3.7]
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[3.7 -> 3.8]
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[3.8 -> 3.9]
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[3.9 -> 4.0]
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[FAQ Index]
Upgrade Guide: 4.0 to 4.1
Note: Upgrades are only supported from one release to the release
immediately following it.
Do not skip releases.

It is highly recommended that you read through and fully understand
this process before attempting it.
If you are doing it on a critical or physically remote machine, it is
recommended that you test this process on an identical, local system to
verify its success before attempting on a critical or remote computer.

Upgrading is a convenient way to bring your OpenBSD system up to the most
recent version.
However, the results are not intended to precisely match the results of
a wipe-and-reload installation.
Old library files in particular are not removed in the upgrade process,
as they may be required by older applications that may or may not be
upgraded at this time.
If you REALLY wish to get rid of all these old files, you are probably
better off reinstalling from scratch.
Table of Contents:

• 
  Before upgrading
  
• 
  The upgrade process
  
• 
  Final steps
  

Before upgrading
Check whether you have made any modifications to your kernel.
For example, you might have modified your network device to use a non-default
setting using config(8).
Note your changes, so you can repeat them for the new 4.1 kernel.
rc.conf:
Unlike previous versions of this process, it is now assumed that
/etc/rc.conf is not a user-altered file.
If you have made changes to your /etc/rc.conf file, merge those
changes into /etc/rc.conf.local.
If you have NO /etc/rc.conf.local, simply copy your existing
/etc/rc.conf file to /etc/rc.conf.local and
delete the last line of the script!
Otherwise, pull your existing rc.conf into the top of your
existing rc.conf.local file and remove the last line
before doing the rest of this process.
Special note for ARM users (
armish
,   
zaurus
):
Changes in the ABI requires a slightly different upgrade process if not

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