103 lines
4.5 KiB
Plaintext
103 lines
4.5 KiB
Plaintext
.\" $NetBSD: prep,v 1.8 1999/01/13 07:30:08 ross Exp $
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.
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Installing NetBSD/pmax using the sysinst tool and an image of a full
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bootable root filesystem is now a relatively painless process. The
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diskimage is avaiable via (either a diskimage, dd'able to a raw disk
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or tarfile to for NFS .
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.Pp
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From most convenient to least convenient, the installation methods
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are:
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.Bl -enum
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.It
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Booting as a diskless workstation via Ethernet,
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followed by initialization of the local disk and
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installing onto the local disk over NFS.
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.It
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Copying a bootable diskimage onto the beginning of a disk
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and installing onto that disk
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.It
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installation using a helper machine to set up a bootable
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NetBSD/pmax root filesystem, and moving the disk
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to the target.
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.It
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Installation from Ultrix or other OSes by putting a copy
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of the diskimage into the existing swap partition and a copy
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of the NetBSD kernel into your Ultrix root filesystem.
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.El
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.Pp
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Before you start, you must choose an installation method. If you have
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an Ethernet connection to an NFS server that can provide even ~30M for
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a diskless-root filesystem, then installation via the net is best.
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Next best, if your DECstation is already running Ultrix and has two
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disk drives (or one, if you live dangerously), is to copy a diskimage
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onto one drive. Finally, you can install by using a second machine as
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a helper to prepare a bootable NetBSD/pmax disk.
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.Pp
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If your target is going to run diskless, then installation proceeds as
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for method 1.
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.Pp
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This release of NetBSD/pmax uses the new sysinst installation utility.
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You should examine the guide on the NetBSD/pmax web site, which has
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more complete and more up-to-date instructions for sysinst. The
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following is a brief synopsis which has been successfully followed by
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both first-time NetBSD/pmax installers and to upgrade existing
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gsystems.
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.Pp
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You should familiarize yourself with the console PROM environment
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and the hardware configuration. The PROMs on the older Decstation
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2100 and 3100 use one syntax. The PROMs on the TurboChannel machines
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use a completely different syntax. Be sure you know how to print
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the configuration of your machine, and how to boot from disk or
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network, as appropriate.
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.Pp
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On the 2100/3100, that's
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.Bd -literal -offset indent
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boot -f rz(0,N,0)netbsd (boot from rzN)
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boot -f tftp() (boot diskless via TFTP)
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boot -f tftp() (boot via MOP from an Ultrix server)
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.Ed
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On the 5000/200, the equivalent is
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.Bd -literal -offset indent
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boot 5/rzN/netbsd
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boot 6/tftp
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boot 6/mop
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.Ed
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and on other 5000 series machines,
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.Bd -literal -offset indent
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boot 3/rzN/netbsd
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boot 3/tftp
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boot 3/mop
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.Ed
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You will also need to know the total size (in sectors) and the
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approximate geometry of the disks you are installing onto, so that you
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can label your disks for the BSD fast filesystem (FFS). For most SCSI
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drives (including all SCSI-2 drives), the kernel will correctly detect
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the disk geometry. The sysinst tool will suggest these as the default.
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.Pp
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If you're installing NetBSD/pmax for the first time it's a very good
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idea to pre-plan partition sizes for the disks on which you're
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installing NetBSD. Changing the size of partitions after you've
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installed is difficult. If you do not have a spare bootable disk, it
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may be simpler to re-install NetBSD again from scratch.
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.Pp
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If you install by copying a disk image, and you want to change the size
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of the root partition from the default 32Mbytes, you will need a second
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`scratch' disk. You should copy the diskimage onto the `scratch' disk,
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boot the scratch disk, and use it to create a tailored root filesystem.
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This is because you cannot change the size of an active partition (i.e.,
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the root filesysem you booted). The standard trick to get around this is
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to put a cut-down miniroot into the swap partition, boot the miniroot,
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and use that system to change the root filesystem size. DECstation
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PROMs don't reliably support booting off partitions other than the 'a'
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partition, which is why you need two disks to tailor the root filesystem
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size.
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.Pp
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Assuming a classic partition scheme with separate root (`/') and /usr
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filesystems, a comfortable size for the NetBSD root filesystem
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partition is about 32M. A good initial size for the swap partition is
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twice the amount of physical memory in your machine (though, unlike
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Ultrix, there are no restrictions on the size of the swap partition
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that would render part of your memory unusable). The default swap
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size is 64Mbytes, which is adequate for doing a full system build. A
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full binary installation, with X11R6.3, takes about 150MB in `/usr'.
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