72 lines
3.0 KiB
Plaintext
72 lines
3.0 KiB
Plaintext
.\" $NetBSD: prep,v 1.7 1999/01/13 07:30:08 ross Exp $
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.
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Before you start you might need to consider your disk configuration
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to sort out a quirk in SCSI-ID to SD-UNIT mapping that exists on
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Sun Sparcstations.
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.Pp
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Upon leaving the factory, SunOS and the OpenBOOT ROM map according to
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this table:
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.Bl -column -offset indent SCSI-ID SunOS\ SD-Unit
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.It Tn Em SCSI-ID Ta Tn Em SunOS\ SD-Unit
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.It \~\~\~0 Ta \~\~\~sd3
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.It \~\~\~1 Ta \~\~\~sd1
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.It \~\~\~2 Ta \~\~\~sd2
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.It \~\~\~3 Ta \~\~\~sd0
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.It \~\~\~4 Ta \~\~\~sd4
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.It \~\~\~5 Ta \~\~\~sd5
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.It \~\~\~6 Ta \~\~\~sd6
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.El
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.Pp
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Unlike SunOS and the OpenBOOT ROM, a generic NetBSD kernel numbers
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scsi drives sequentially as it finds them. The drive with the
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lowest scsi-id will be called sd0, the next one sd1, etc.
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.Pp
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To ease the installation process, the default NetBSD kernel in the
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distribution is setup to match the Sun mapping above by hard-wiring
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scsi-id#3 to sd0 and scsi-id#0 to sd3. The remaining drives will be
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dynamically mapped to other sd* numbers.
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.Pp
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A truely generic NetBSD kernel is also provided as `/netbsd.GENERIC',
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which will do the standard NetBSD probe ordering. If your configuration
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differs from the default Sun setup, you can try to use this kernel to
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complete the installation.
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.Pp
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.(Note
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This is also a concern when you start building your own customised kernels.
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.Note)
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.Pp
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Your OpenBOOT ROM may need some setup. make sure you boot from `new
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command mode'. If your machine comes up and gives you a `\*>' prompt
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instead of `ok', type:
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.Dl \*> Ic n
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.Dl ok Ic setenv sunmon-compat? false
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.Dl ok
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This is needed because the NetBSD kernel relies on functionality provided
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by OpenBOOT ROMs -- the ability to pass down Forth commands and have them
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executed in the ROM -- that appears to go away when the OpenBOOT ROM
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operates in `old monitor compatibility' mode.
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.Pp
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Also, you cannot use the security modes of the sparc OpenBOOT ROM.
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.Dl ok Ic setenv security-mode none
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.Pp
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If you're installing NetBSD/sparc for the first time it's a good idea
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to look at the partition sizes of disk you intend installing NetBSD on.
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.Pp
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Asumming a classic partition scheme with root (`/') and /usr filesystems,
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a comfortable size for the NetBSD root filesystem partition is about 20MB;
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a good initial size for the swap partition is twice the amount of physical
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memory in your machine (though, unlike SunOS 4.x, there are no restrictions
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on the size of the swap partition that would render part of your memory
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unusable). A full binary installation takes about 60MB in `/usr'.
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.Pp
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Some network devices (i.e. the built-in `le' interface on sun4m machines)
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allow a choice between operating on a UTP or a AUI port. The `le' driver
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supports automatic detection of the port which is actually connected to
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the wire.
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.Pp
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If automatic detection is not available or not working properly in your
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environment, you may have to specify the type connection using the
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`media' parameter of ifconfig(8). During installation, you'll get the
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opportunity to specify the appropriate medium. Use ``10base5/AUI''
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to select the AUI connector, or ``10baseT/UTP'' to select the UTP connector.
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