boot_i386.8 - OpenGrok cross reference for /freebsd/sbin/reboot/boot

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boot_i386.8 (8dfcea8cc10e234fa62966dc11f54b72ee03d05e)	boot_i386.8 (9ef416cfedde92b526598c029ad0c2e750fc1c21)
1.\" Copyright (c) 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software written and contributed 5.\" to Berkeley by William Jolitz. 6.\" 7.\" Almost completely rewritten for FreeBSD 2.1 by Joerg Wunsch. 8.\" --- 22 unchanged lines hidden (view full) --- 31.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35.\" SUCH DAMAGE. 36.\" 37.\" @(#)boot_i386.8 8.2 (Berkeley) 4/19/94 38.\"	1.\" Copyright (c) 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software written and contributed 5.\" to Berkeley by William Jolitz. 6.\" 7.\" Almost completely rewritten for FreeBSD 2.1 by Joerg Wunsch. 8.\" --- 22 unchanged lines hidden (view full) --- 31.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35.\" SUCH DAMAGE. 36.\" 37.\" @(#)boot_i386.8 8.2 (Berkeley) 4/19/94 38.\"
39.\" $Id: boot_i386.8,v 1.15 1999/01/06 14:19:09 rnordier Exp $	39.\" $Id: boot_i386.8,v 1.16 1999/01/19 09:04:18 rnordier Exp $
40.\" 41.Dd April 19, 1994 42.Dt BOOT 8 i386 43.Os 44.Sh NAME 45.Nm boot 46.Nd 47system bootstrapping procedures --- 8 unchanged lines hidden (view full) --- 56known as drive A:) and, failing that, from hard disk drive 0 (sometimes 57known as drive C:, or as drive 0x80 to the BIOS). Some BIOSes allow 58you to change this default sequence, and may also include a CD-ROM 59drive as a boot device. 60.Pp 61By default, a three-stage bootstrap is employed, and control is 62automatically passed from the boot blocks (bootstrap stages one and 63two) to a separate third-stage bootstrap program,	40.\" 41.Dd April 19, 1994 42.Dt BOOT 8 i386 43.Os 44.Sh NAME 45.Nm boot 46.Nd 47system bootstrapping procedures --- 8 unchanged lines hidden (view full) --- 56known as drive A:) and, failing that, from hard disk drive 0 (sometimes 57known as drive C:, or as drive 0x80 to the BIOS). Some BIOSes allow 58you to change this default sequence, and may also include a CD-ROM 59drive as a boot device. 60.Pp 61By default, a three-stage bootstrap is employed, and control is 62automatically passed from the boot blocks (bootstrap stages one and 63two) to a separate third-stage bootstrap program,
64.Pa /boot/loader .	64.Pa loader .
65This third stage provides more sophisticated control over the booting 66process than it is possible to achieve in the boot blocks, which are 67constrained by occupying limited fixed space on a given disk or slice. 68.Pp 69However, it is possible to dispense with the third stage altogether, 70either by specifying a kernel name in the boot block parameter 71file, 72.Pa /boot.config , 73or by hitting a key during a brief pause (while one of the characters 74.Dv - , 75.Dv \e , 76.Dv \&\| , 77or 78.Dv / 79is displayed) before	65This third stage provides more sophisticated control over the booting 66process than it is possible to achieve in the boot blocks, which are 67constrained by occupying limited fixed space on a given disk or slice. 68.Pp 69However, it is possible to dispense with the third stage altogether, 70either by specifying a kernel name in the boot block parameter 71file, 72.Pa /boot.config , 73or by hitting a key during a brief pause (while one of the characters 74.Dv - , 75.Dv \e , 76.Dv \&\| , 77or 78.Dv / 79is displayed) before
80.Pa /boot/loader	80.Pa loader
81is invoked. Booting will also be attempted at stage two, if the 82third stage cannot be loaded. 83.Pp	81is invoked. Booting will also be attempted at stage two, if the 82third stage cannot be loaded. 83.Pp
84The remainder of this subsection deals only with the boot blocks. 85At present, documentation of the third stage is chiefly 86available through online help in the 87.Pa /boot/loader 88program itself.	84The remainder of this subsection deals only with the boot blocks. The 85.Pa loader 86program is documented separately.
89.Pp 90After the boot blocks have been loaded, 91you should see a prompt similar to the following: 92.Bd -literal 93>> FreeBSD/i386 BOOT 94Default: 0:wd(0,a)/kernel 95boot: 96.Ed --- 128 unchanged lines hidden (view full) --- 225.Pa /boot.config 226to set defaults. Enter them in one line just as you type at the 227.Ql boot: 228prompt. 229.Sh FILES 230.Bl -tag -width /kernel.old.config -compact 231.It Pa /boot.config 232parameters for the boot blocks (optional)	87.Pp 88After the boot blocks have been loaded, 89you should see a prompt similar to the following: 90.Bd -literal 91>> FreeBSD/i386 BOOT 92Default: 0:wd(0,a)/kernel 93boot: 94.Ed --- 128 unchanged lines hidden (view full) --- 223.Pa /boot.config 224to set defaults. Enter them in one line just as you type at the 225.Ql boot: 226prompt. 227.Sh FILES 228.Bl -tag -width /kernel.old.config -compact 229.It Pa /boot.config 230parameters for the boot blocks (optional)
	231.It Pa /boot/boot1 232first stage bootstrap file 233.It Pa /boot/boot2 234second stage bootstrap file
233.It Pa /boot/loader	235.It Pa /boot/loader
234third-stage bootstrap	236third stage bootstrap
235.It Pa /kernel 236default kernel 237.It Pa /kernel.old 238typical non-default kernel (optional) 239.El 240.Sh SEE ALSO 241.Xr ddb 4 , 242.Xr ttys 5 , 243.Xr btxld 8 , 244.Xr config 8 , 245.Xr disklabel 8 , 246.Xr halt 8 ,	237.It Pa /kernel 238default kernel 239.It Pa /kernel.old 240typical non-default kernel (optional) 241.El 242.Sh SEE ALSO 243.Xr ddb 4 , 244.Xr ttys 5 , 245.Xr btxld 8 , 246.Xr config 8 , 247.Xr disklabel 8 , 248.Xr halt 8 ,
	249.Xr loader 8 ,
247.Xr reboot 8 , 248.Xr shutdown 8 249.Sh BUGS 250The disklabel format used by this version of 251.Bx 252is quite 253different from that of other architectures. 254.Pp 255Some features are not yet documented.	250.Xr reboot 8 , 251.Xr shutdown 8 252.Sh BUGS 253The disklabel format used by this version of 254.Bx 255is quite 256different from that of other architectures. 257.Pp 258Some features are not yet documented.