upgrade revision 1.2 
1It is possible to easily upgrade your existing NetBSD/sun3 system
2using the upgrade program in the miniroot.  If you wish to upgrade
3your system by this method, simply select the `upgrade' option once
4the miniroot has booted.  The upgrade program with then guide you
5through the procedure.  The upgrade program will:
6
7	* Enable the network based on your system's current
8	  network configuration.
9
10	* Mount your existing filesystems.
11
12	* Extract binary sets from the media of your choice.
13
14	* Fixup your system's existing /etc/fstab, changing the
15	  occurrences of `ufs' to `ffs' and let you edit the
16	  resulting file.
17
18	* Make new device nodes in your root filesystem.
19
20	* Copy a new kernel onto your root partition.
21	  NOTE: the existing kernel WILL NOT be backed up; doing
22	  so would be pointless, since older kernels may not be
23	  capable of running NetBSD 1.2 executables.
24
25	* Install a new boot block.
26
27	* Check your filesystems for integrity.
28
29While using the miniroot's upgrade program is the preferred method
30of upgrading your system, it is possible to upgrade your system
31manually.  To do this, follow the following procedure:
32
33	* Place _at least_ the `base' binary set in a filesystem
34	  accessible to the target machine.  A local filesystem
35	  is preferred, since the NFS subsystem in the NetBSD 1.2
36	  kernel may be incompatible with your old binaries.
37
38	* Back up your pre-existing kernel and copy the 1.2
39	  kernel into your root partition.
40
41	* Reboot with the 1.2 kernel into single-user mode.
42
43	* Check all filesystems:
44
45		/sbin/fsck -pf
46
47	* Mount all local filesystems:
48
49		/sbin/mount -a -t nonfs
50
51	* If you keep /usr or /usr/share on an NFS server, you
52	  will want to mount those filesystems as well.  To do
53	  this, you will need to enable the network:
54
55		sh /etc/netstart
56
57	* Run the update(8) daemon, to ensure that new programs
58	  are actually stored on disk.
59
60		update
61
62	* Make sure you are in the root filesystem and extract
63	  the `base' binary set:
64
65		cd /
66		tar --unlink -zxvpf /path/to/base11.tar.gz
67
68	  NOTE: the `--unlink' option is _very_ important!
69
70	* Install a new boot block:
71
72		cd /usr/mdec
73		disklabel -B <root disk, e.g. sd0>
74
75	* Sync the filesystems:
76
77		sync
78
79	* At this point you may extract any other binary sets
80	  you may have placed on local filesystems, or you may
81	  wish to extract additional sets at a later time.
82	  To extract these sets, use the following commands:
83
84		cd /
85		tar --unlink -zxvpf <path to set>
86
87NOTE: you SHOULD NOT extract the `etc' set if upgrading.  Instead, you
88should extract that set into another area and carefully merge the changes
89by hand.
90