102 lines
3.0 KiB
Groff
102 lines
3.0 KiB
Groff
.\" $Id: netboot.8,v 1.3 1997/05/31 18:29:58 tegge Exp $
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.Dd May 15, 1997
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.Dt NETBOOT 8
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.\".Os BSD 4
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.Sh NAME
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.Nm netboot
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.Nd Allows remote booting of the operating system
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.Sh SYNOPSIS
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.Nm
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.Bl -tag -width Ds
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is used for booting the operating system over a network card. The
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program is either loaded into a ROM, or run from DOS.
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.Pp
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.Sh DESCRIPTION
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.Nm
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loads parameters such as IP addresses, kernel name and filesystem
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names from a bootp server, tries to mount the specified root and
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swap filesystems, loads the specified kernel from the root filesystem
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using NFSv2, and then gives control to the kernel.
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.Pp
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The bootp server must be configured appropriately. An example
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configuration for /etc/bootptab is the following:
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.Bd -literal
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.default:\\
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:sm=255.255.255.0:\\
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:gw=your.gateway.ip:\\
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:hn:ht=ether:vm=rfc1048:\\
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:rp="rootfs.ip:/rootfs/path":\\
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:T128="swapfs.ip:/swapfs/path":\\
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:T129=swapsize:\\
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:T130="root,mount,options":\\
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:T131="swap,mount,options":\\
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:ra=255.255.255.255:
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client01:bf="kernel.300":ha=00400530d6d9:tc=.default:
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client02:bf="kernel.280":ha=00400530d6d3:tc=.default:
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...
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.Ed
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.Pp
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For a precise description of the bootptab parameters, see
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bootptab (5) .
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.Pp
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The
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.Nm
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code uses options as follows.
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.Bl -tag -width indent
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.It Cm sm
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indicates the subnet mask.
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.It Cm gw
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is the ip address of the gateway.
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.It Cm hn
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instructs the bootp server to send the hostname in the reply.
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.It Cm ht= Ns Ar ether
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.\.It ht=ether
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indicates that the hardware is ethernet.
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.It Cm vm= Ns Ar rfc1048
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indicates the use of rfc1048 extensions.
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.It Cm rp
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specifies where the directory mounted as the root filesystem is located.
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The IP address of the server must be specified, followed by a : and the
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directory pathname.
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.It Cm T128
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specifies where the directory containing the swap file is located.
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The IP address of the server must be specified, followed by a : and the
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directory pathname.
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The actual swapfile is a file named swap.X.Y.Z.T where X.Y.Z.T is the
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IP address of the client. If this argument is given, the swap file must exist.
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.It Cm T129
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specifies the size of the swap file, in KB. Must be specified as
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a 8 digits long hexadecimal number. 16 MB swap thus becomes
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T129=00004000. This argument is optional; if missing, the size of the
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swap file is read from the server.
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.It Cm T130
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specifies root mount options, such as soft, intr, tcp, etc.
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This argument is optional. The default is to use UDP.
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.It Cm T131
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specifies swap mount options.
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This argument is optional.
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.It Cm bf
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is the name of the kernel. If not specified, it defaults to
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"kernel".
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.It Cm ra
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is used to override the reply address.
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.Sh FILES
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.Bl -tag -width /usr/mdec/nb3c509.rom -compact
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.It Pa /usr/mdec/nb8390.rom
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rom image for NE1000/NE2000 cards
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.It Pa /usr/mdec/nb8390.com
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DOS executable for NE1000/NE2000 cards
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.It Pa /usr/mdec/nb3c509.rom
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rom image for 3C509 cards
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.It Pa /usr/mdec/nb3c509.com
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DOS executable for 3C509 cards
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.Sh SEE ALSO
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.Xr bootptab 5 ,
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.Xr bootpd 8
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.Sh BUGS
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To use netboot with Western Digital/SMC cards or 3C503 cards, a recompile
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is needed after a little Makefile tweaking.
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