124 lines
5.0 KiB
Groff
124 lines
5.0 KiB
Groff
.\" $NetBSD: boot.8,v 1.1 1995/07/02 02:09:52 briggs Exp $
|
|
.\"
|
|
.\" Copyright (c) 1990, 1991 The Regents of the University of California.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" This code is derived from software contributed to Berkeley by
|
|
.\" the Systems Programming Group of the University of Utah Computer
|
|
.\" Science Department.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" From:
|
|
.\" @(#)boot_hp300.8 8.2 (Berkeley) 4/19/94
|
|
.\"
|
|
.Dd July 1, 1995
|
|
.Dt BOOT_MAC68K 8 mac68k
|
|
.Os
|
|
.Sh NAME
|
|
.Nm boot
|
|
.Nd
|
|
system bootstrapping procedures
|
|
.Sh DESCRIPTION
|
|
.Sy Power fail and crash recovery.
|
|
Normally, the
|
|
.Tn NetBSD
|
|
kernel on the mac68k architecture is booted from the native operating
|
|
system by means of an application program. When the kernel takes over,
|
|
it initializes itself and proceeds to boot the system. An automatic
|
|
consistency check of the file systems takes place, and unless this
|
|
fails, the system comes up to multi-user operations. The proper way
|
|
to shut the system down is with the
|
|
.Xr shutdown 8
|
|
command.
|
|
.Pp
|
|
If the system crashes, it will enter the kernel debugger,
|
|
.Xr ddb 8
|
|
,if it is configured in the kernel. If the debugger is not present,
|
|
or the debugger is exited, the system will attempt a dump to the
|
|
configured dump device (which will be automatically recovered with
|
|
.Xr savecore 8
|
|
during the next boot cycle). After the dump is complete (successful
|
|
or not), the system will attempt a reboot.
|
|
.Pp
|
|
On most mac68k machines with "soft-power" after the IIcx, the power
|
|
switch can be physically rotated and locked in the 'on' position.
|
|
The native OS can be configured to automatically start the
|
|
.Tn NetBSD
|
|
boot program. Additionally, the NetBSD boot program can be configured
|
|
to boot
|
|
.Tn NetBSD
|
|
without intervention. When a system is so configured, it can crash
|
|
or lose power and reboot back to a fully multi-user state without
|
|
any intervention.
|
|
.Pp
|
|
.Sy The boot application
|
|
The boot application runs in the native OS on the system. It has a
|
|
dialog where booting preferences may be changed and an option whereby
|
|
these options may be saved. The preferences are stored in the program
|
|
itself, not in a preferences folder--thus allowing two separate copies
|
|
of the program to be configured differently (e.g. to boot different
|
|
netbsd or netbsd.test, or to boot from two different drives).
|
|
.Pp
|
|
One option that may be specified is a boot to single-user mode. This
|
|
stops the boot process very early on and allows system maintenence.
|
|
If one wishes to provide some security at this phase of the boot, remove
|
|
the
|
|
.Ql secure
|
|
option from ttye0 in the
|
|
.Xr ttys 5
|
|
file.
|
|
.Pp
|
|
Another useful option that may be specified is the "serial console"
|
|
option. This will allow a serial device (terminal or computer) to
|
|
act as a console for the system. This device must be configured to
|
|
use 9600 baud, eight bits, no parity, and one stop bit (9600-N81).
|
|
Either the printer port or the modem port (tty01 and tty00,
|
|
respectively) may be used for this.
|
|
.Pp
|
|
It is sometimes useful to boot a kernel that resides in a folder
|
|
in native OS rather than from the usual location in the
|
|
.Tn NetBSD
|
|
file system. A radio button is supplied for this purpose. Note that
|
|
some programs will not run properly if the kernel is not found as
|
|
.Ar /netbsd
|
|
within the
|
|
.Tn NetBSD
|
|
file system.
|
|
.Sh FILES
|
|
.Bl -tag -width /netbsd -compact
|
|
.It Pa /netbsd
|
|
system kernel
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr ddb 8
|
|
.Xr savecore 8
|
|
.Xr shutdown 8
|
|
.Xr ttys 5
|