Annotation of wikisrc/guide/upgrading.mdwn, revision 1.4
1.4 ! jdf 1: **Contents**
! 3: [[!toc levels=3]]
1.1 jdf 5: # Upgrading NetBSD
7: This chapter describes the binary upgrade of a NetBSD system. There are a
8: variety of alternatives to perform this procedure, and the following sections
9: will guide you through them.
11: ## Using sysinst
13: ### Overview
15: To do the upgrade, you must have some form of bootable media (CD-ROM, USB
16: drive, network, etc.) available and at least the base and kern distribution
17: sets. Since files already installed on the system are overwritten in place,
18: you only need additional free space for files which weren't previously
19: installed or to account for growth of the sets between releases. Usually this
20: is not more than a few megabytes.
22: ### Note
24: Since upgrading involves replacing the kernel, boot blocks, and most of the
25: system binaries, it has the potential to cause data loss. Before beginning,
26: you are strongly advised to back up any important data on the NetBSD partition
27: or on any other partitions on your disk, most importantly `/etc`.
29: The upgrade procedure is similar to an installation, but without the hard disk
30: partitioning. sysinst will attempt to merge the settings stored in your `/etc`
31: directory with the new version of NetBSD. Also, file systems are checked
32: before unpacking the sets. Fetching the binary sets is done in the same manner
33: as in the installation procedure.
35: ### The INSTALL document
37: Before doing an upgrade it is essential to read the release information and
38: upgrading notes in one of the `INSTALL` files: this is the official
39: description of the upgrade procedure, with platform specific information and
40: important details. It can be found in the root directory of the NetBSD release
41: (on the install CD or on the FTP server).
43: It is advisable to print the INSTALL document out. It is available in four
44: formats: `.txt`, `.ps`, `.more`, and `.html`.
46: ### Performing the upgrade
48: The following section provides an overview of the binary upgrade process. Most
49: of the following sysinst dialogs are similar to those of the installation
50: process. More verbose descriptions and explanations of the dialogs are
51: available in [[Example installation|guide/exinst]].
53: After selecting the installation language and the keyboard type, the main menu
54: appears. Choosing option `b: Upgrade NetBSD on a hard disk` will start the the
55: upgrade process.
1.3 jdf 57: ![Starting the upgrade](/guide/images/upgrading_main.png)
58: **Starting the upgrade**
1.1 jdf 59:
60: This dialog will request permission to continue with the upgrade. At this point
61: nothing has been changed yet and the upgrade can still be cancelled. This is a
62: good time to ask yourself whether you have made a backup, and if you know for
63: certain that you will be able to restore from it.
1.3 jdf 65: ![Continuing the upgrade](/guide/images/upgrading_confirm.png)
1.2 jdf 66: **Continuing the upgrade**
1.1 jdf 67:
68: After choosing to continue with `Yes`, the next dialog will ask you to specify
69: the hard disk with the NetBSD system that shall be upgraded. If more than one
70: disk is available a list of the disks will be displayed.
1.3 jdf 72: ![Choosing the hard drive](/guide/images/upgrading_select-disc.png)
1.2 jdf 73: **Choosing the hard drive**
1.1 jdf 74:
75: The system used for the example has only one hard disk available: `wd0`.
77: The following dialog provides a menu to choose the installation type. The
78: choices are `Full installation`, `Minimal installation`, or `Custom
1.3 jdf 81: ![Choosing the distribution filesets](/guide/images/install_install-type.png)
1.2 jdf 82: **Choosing the distribution filesets**
1.1 jdf 83:
84: At this point, sysinst will perform a check of the file system to ensure its
1.3 jdf 87: ![File system check](/guide/images/upgrading_fsck.png)
1.2 jdf 88: **File system check**
1.1 jdf 89:
90: The next step is to choose which type of bootblocks to install.
1.3 jdf 92: ![Choosing bootblocks](/guide/images/install_bootblocks.png)
1.2 jdf 93: **Choosing bootblicks**
1.1 jdf 94:
95: The next dialog will ask how much information should be displayed during the
96: extraction of the distribution sets.
1.3 jdf 98: ![Upgrade process - verbosity level](/guide/images/install_verbosity.png)
1.2 jdf 99: **Upgrade process - verbosity level**
1.1 jdf 100:
101: The following dialog asks for the install method of choice and provides a list
102: of possible options. The install medium contains the new NetBSD distribution
103: sets. You will be prompted for different information depending on which option
104: you choose. For example, a CD-ROM or DVD install requires you to specify which
105: device to use and which directory the sets are in, while an FTP install
106: requires you to configure your network and specify the hostname of an FTP
107: server. More details can be found in
108: [[Choosing the installation media|guide/exinst#choosing_the_installation_media]].
1.3 jdf 110: ![Install medium](/guide/images/install_medium.png)
1.2 jdf 111: **Install medium**
1.1 jdf 112:
113: sysinst will now unpack the distribution sets, replacing your old binaries.
114: After unpacking these sets, it runs the postinstall script to clean up various
115: things. If no problems occur, you are done. If postinstall produces errors, you
116: will have to manually resolve the issues it brings up. See postinstall's man
117: page for more information. You should also read the remarks in `INSTALL` about
118: upgrading, as specific compatibility issues are documented there.
1.3 jdf 120: ![Upgrade complete](/guide/images/upgrading_complete.png)
1.2 jdf 121: **Upgrade complete**
1.1 jdf 122:
123: When you are back at the main menu, remove the boot medium (if applicable) and
124: reboot. Have fun with your new version of NetBSD!
126: ## Using sysupgrade
128: The sysupgrade utility (currently found in `pkgsrc/sysutils/sysupgrade`) allows
129: you to upgrade a running system to a newer binary release.
131: ### Note
133: Please be aware that, as of August 2012, sysupgrade is a farily new tool and is
134: still undergoing field testing. Use with care. In particular, upgrades across
135: major binary releases might not work properly yet because of the lack of a
136: reboot between the kernel installation and the unpacking of the sets. That said,
137: you may find this tool very convenient to track NetBSD-current or stable NetBSD
140: One of the benefits of sysupgrade is that it is an integrated and
141: almost-unattended solution: the tool fetches the new kernel and distribution
142: sets from remote sites if you desire and performs the upgrade without user
143: intervention until new changes to the configuration files need to be merged.
145: Let's assume you are running NetBSD/amd64 6.0 and you wish to upgrade to NetBSD
146: 6.1. The procedure to do so would be to run the following command:
148: # sysupgrade auto ftp://ftp.NetBSD.org/pub/NetBSD/NetBSD-6.1/amd64
151: And that's all that it takes. This will proceed to download the kernel and
152: sets appropriate for your machine, unpack them and assist you in merging new
153: configuration changes. Do not forget to reboot afterwards.
155: For more details, please see the included sysupgrade(8) manual page and the
156: `/usr/pkg/etc/sysupgrade.conf` configuration file.
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