upgrade revision 1.6 
1	$NetBSD: upgrade,v 1.6 1998/01/09 18:46:23 perry Exp $	
2
3It is possible to easily upgrade your existing NetBSD/hp300 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	* Fixup your system's existing /etc/fstab, changing the
17	  occurrences of `ufs' to `ffs' and let you edit the
18	  resulting file.
19
20	* Make new device nodes in your root filesystem.
21
22	* Don't forget to extract the `kern' set from the distribution.
23	  NOTE: the existing kernel WILL NOT be backed up; doing
24	  so would be pointless, since older kernels may not be
25	  capable of running NetBSD _VER executables.
26
27	* Install a new boot block.
28
29	* Check your filesystems for integrity.
30
31While using the miniroot's upgrade program is the preferred method
32of upgrading your system, it is possible to upgrade your system
33manually.  To do this, follow the following procedure:
34
35	* Place _at least_ the `base' binary set in a filesystem
36	  accessible to the target machine.  A local filesystem
37	  is preferred, since the NFS subsystem in the NetBSD _VER
38	  kernel may be incompatible with your old binaries.
39
40	* Back up your pre-existing kernel and copy the _VER
41	  kernel into your root partition.
42
43	* Reboot with the _VER kernel into single-user mode.
44
45	* Check all filesystems:
46
47		/sbin/fsck -pf
48
49	* Mount all local filesystems:
50
51		/sbin/mount -a -t nonfs
52
53	* If you keep /usr or /usr/share on an NFS server, you
54	  will want to mount those filesystems as well.  To do
55	  this, you will need to enable the network:
56
57		sh /etc/netstart
58
59	* Run the update(8) daemon, to ensure that new programs
60	  are actually stored on disk.
61
62		update
63
64	* Make sure you are in the root filesystem and extract
65	  the `base' binary set:
66
67		cd /
68		tar --unlink -zxvpf /path/to/base.tgz
69
70	  NOTE: the `--unlink' option is _very_ important!
71
72	* Install a new boot block:
73
74		cd /usr/mdec
75		disklabel -B <root disk, e.g. sd0>
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