upgrade revision 1.4 
1	$NetBSD: upgrade,v 1.4 1998/01/09 18:47:37 perry Exp $	
2
3It is possible to easily upgrade your existing NetBSD/sun3 system
4using the upgrade program in the miniroot.  If you wish to upgrade
5your system by this method, simply select the `upgrade' option once
6the miniroot has booted.  The upgrade program with then guide you
7through the procedure.  The upgrade program will:
8
9	* Enable the network based on your system's current
10	  network configuration.
11
12	* Mount your existing filesystems.
13
14	* Extract binary sets from the media of your choice.
15
16	* Make new device nodes in your root filesystem.
17
18	* Copy a new kernel onto your root partition.
19	  NOTE: the existing kernel WILL NOT be backed up; doing
20	  so would be pointless, since older kernels may not be
21	  capable of running NetBSD _VER executables.
22
23	* Install a new boot block.
24
25	* Check your filesystems for integrity.
26
27While using the miniroot's upgrade program is the preferred method
28of upgrading your system, it is possible to upgrade your system
29manually.  To do this, follow the following procedure:
30
31	* Place _at least_ the `base' binary set in a filesystem
32	  accessible to the target machine.  A local filesystem
33	  is preferred, since the NFS subsystem in the NetBSD _VER
34	  kernel may be incompatible with your old binaries.
35
36	* Back up your pre-existing kernel and copy the _VER
37	  kernel into your root partition.
38
39	* Reboot with the _VER kernel into single-user mode.
40	  (Otherwise you can not install the boot block.)
41
42	* Check all filesystems:
43
44		/sbin/fsck -pf
45
46	* Mount all local filesystems:
47
48		/sbin/mount -a -t nonfs
49
50	* If you keep /usr or /usr/share on an NFS server, you
51	  will want to mount those filesystems as well.  To do
52	  this, you will need to enable the network:
53
54		sh /etc/netstart
55
56	* Run the update(8) daemon, to ensure that new programs
57	  are actually stored on disk.
58
59		update
60
61	* Make sure you are in the root filesystem and extract
62	  the `base' binary set:
63
64		cd /
65		tar --unlink -zxvpf /path/to/base.tar.gz
66
67	  NOTE: the `--unlink' option is _very_ important!
68
69	* Install a new boot block:
70	  (assuming root is on /dev/rsd0a)
71
72		cd /usr/mdec
73		cp -p ./ufsboot /mnt/ufsboot
74		sync ; sleep 1 ; sync
75		./installboot -v /ufsboot bootxx /dev/rsd0a
76
77	* Sync the filesystems:
78
79		sync
80
81	* At this point you may extract any other binary sets
82	  you may have placed on local filesystems, or you may
83	  wish to extract additional sets at a later time.
84	  To extract these sets, use the following commands:
85
86		cd /
87		tar --unlink -zxvpf <path to set>
88
89NOTE: you SHOULD NOT extract the `etc' set if upgrading.  Instead, you
90should extract that set into another area and carefully merge the changes
91by hand.
92