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FreeBSD 9.1-RELEASE Installation Instructions
''''' This article gives some brief instructions on installing FreeBSD 9.1-RELEASE and upgrading the systems running earlier releases.
'''''
Installing FreeBSD
The link:{handbook}#bsdinstall[“Installing FreeBSD”] chapter of the link:{handbook}[FreeBSD Handbook] provides more in-depth information about the installation program itself, including a guided walk-through with screenshots.
Upgrading FreeBSD
If you are upgrading from a previous release of FreeBSD, please read http://www.FreeBSD.org/releases/9.1R/relnotes-detailed/#upgrade[upgrading section in the Release Notes] for notable incompatibilities carefully.
Upgrading from Source
The procedure for doing a source code based update is described in link:{handbook}#synching[https://doc.FreeBSD.org/en/books/handbook/book/#synching] and link:{handbook}#makeworld[https://doc.FreeBSD.org/en/books/handbook/book/#makeworld].
For SVN use the `releng/9.1` branch which will be where any upcoming Security Advisories or Errata Notices will be applied. The branch tag to use for updating the source is `RELENG_9_1` for CVS.
Upgrading Using "FreeBSD Update"
The man:freebsd-update[8] utility supports binary upgrades of i386 and amd64 systems running earlier FreeBSD releases. Systems running `7.[34]-RELEASE`, `8.[12]-RELEASE`, `9.0-RELEASE`, `9.1-BETA1`, or `9.1-RC[123]` can upgrade as follows:
First, ensure that your current system is up to date; a change was recently made to man:freebsd-update[8] (Errata Notice http://security.FreeBSD.org/advisories/FreeBSD-EN-12:01.freebsd-update.asc[FreeBSD-EN-12:01.freebsd-update]) which is needed in order to upgrade to FreeBSD 9.1-RELEASE.
# freebsd-update fetch
# freebsd-update install
Now the man:freebsd-update[8] utility can fetch bits belonging to 9.1-RELEASE. During this process man:freebsd-update[8] will ask for help in merging configuration files.
# freebsd-update upgrade -r 9.1-RELEASE
Due to changes in the way that FreeBSD is packaged on the release media, two complications may arise in this process if upgrading from FreeBSD 7.x or 8.x:
The FreeBSD, which previously could appear in either `/boot/kernel` or `/boot/GENERIC`, now only appears as `/boot/kernel`. As a result, any kernel appearing in `/boot/GENERIC` will be deleted. Please carefully read the output printed by man:freebsd-update[8] and confirm that an updated kernel will be placed into `/boot/kernel` before proceeding beyond this point.
The FreeBSD source tree in `/usr/src` (if present) will be deleted. (Normally the man:freebsd-update[8] utility will update a source tree, but in this case the changes in release packaging result in the man:freebsd-update[8] utility not recognizing that the source tree from the old release and the source tree from the new release correspond to the same part of FreeBSD.)
# freebsd-update install