在Sparc机器上网络安装OpenBSD系统

大部分都是根据man diskless手册走的，虽然有些地方和手册不一样，但是毕竟是摸索出来的，安装成功了
DISKLESS(8)             OpenBSD System Manager's Manual            DISKLESS(8)
NAME
     diskless - booting a system over the network
DESCRIPTION
     The ability to boot a machine over the network is useful for diskless or
     dataless machines, or as a temporary measure while repairing or re-in-
     stalling filesystems on a local disk.  This file provides a general de-
     scription of the interactions between a client and its server when a
     client is booting over the network.  The general description is followed
     by specific instructions for configuring a server for diskless Sun
     clients.
OPERATION
     When booting a system over the network, there are three phases of inter-
     action between client and server:
     1.   The PROM (or stage-1 bootstrap) loads a boot program.
     2.   The boot program loads a kernel.
     3.   The kernel does NFS mounts for root and swap.
     Each of these phases are described in further detail below.
     In phase 1, the PROM loads a boot program.  PROM designs vary widely, so
     this phase is inherently machine-specific.  Sun and Motorola machines use
     RARP to determine the client's IP address and then use TFTP to download a
     boot program from whoever sent the RARP reply.  HP 300-series machines
     use the HP Remote Maintenance Protocol to download a boot program.  Other
     machines may load a network boot program either from diskette or using a
     special PROM on the network card.
     In phase 2, the boot program loads a kernel.  Operation in this phase de-
     pends on the design of the boot program.  The boot program:
     2.1  gets the client IP address using RARP.
     2.2  gets the client name and server IP address by broadcasting an RPC /
          BOOTPARAMS / WHOAMI request with the client IP address.
     2.3  gets the server path for this client's root using an RPC /
          BOOTPARAMS / GETFILE request with the client name.

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