1*bbf21555SRichard Lowe.\" Copyright (c) 2018 iXsystems, Inc. 2*bbf21555SRichard Lowe.\" All rights reserved. 3*bbf21555SRichard Lowe.\" 4*bbf21555SRichard Lowe.\" Redistribution and use in source and binary forms, with or without 5*bbf21555SRichard Lowe.\" modification, are permitted provided that the following conditions 6*bbf21555SRichard Lowe.\" are met: 7*bbf21555SRichard Lowe.\" 1. Redistributions of source code must retain the above copyright 8*bbf21555SRichard Lowe.\" notice, this list of conditions and the following disclaimer. 9*bbf21555SRichard Lowe.\" 2. Redistributions in binary form must reproduce the above copyright 10*bbf21555SRichard Lowe.\" notice, this list of conditions and the following disclaimer in the 11*bbf21555SRichard Lowe.\" documentation and/or other materials provided with the distribution. 12*bbf21555SRichard Lowe.\" 13*bbf21555SRichard Lowe.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 14*bbf21555SRichard Lowe.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15*bbf21555SRichard Lowe.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16*bbf21555SRichard Lowe.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 17*bbf21555SRichard Lowe.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18*bbf21555SRichard Lowe.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19*bbf21555SRichard Lowe.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20*bbf21555SRichard Lowe.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21*bbf21555SRichard Lowe.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22*bbf21555SRichard Lowe.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23*bbf21555SRichard Lowe.\" SUCH DAMAGE. 24*bbf21555SRichard Lowe.\" 25*bbf21555SRichard Lowe.Dd March 30, 2018 26*bbf21555SRichard Lowe.Dt ISOBOOT 7 27*bbf21555SRichard Lowe.Os 28*bbf21555SRichard Lowe.Sh NAME 29*bbf21555SRichard Lowe.Nm isoboot 30*bbf21555SRichard Lowe.Nd Boot code for hybrid ISO/USB images on BIOS-based computers 31*bbf21555SRichard Lowe.Sh DESCRIPTION 32*bbf21555SRichard Lowe.Nm 33*bbf21555SRichard Loweis used on BIOS-based computers to boot from an ISO image that has 34*bbf21555SRichard Lowebeen written to a USB flash drive or other HDD-like device. 35*bbf21555SRichard Lowe.Nm 36*bbf21555SRichard Loweis installed in a 37*bbf21555SRichard Lowe.Cm x86 Boot 38*bbf21555SRichard Lowepartition with 39*bbf21555SRichard Lowe.Xr installboot 8 . 40*bbf21555SRichard Lowe.Sh IMPLEMENTATION NOTES 41*bbf21555SRichard LoweThe El Torito standard for bootable CDs provides a 32KB "System Area" 42*bbf21555SRichard Loweat the beginning of an image. 43*bbf21555SRichard LoweTo create an image that is able to be booted by the BIOS as either a 44*bbf21555SRichard LoweCD-ROM ("ISO") and as a more HDD-like image (e.g. on a USB flash drive) 45*bbf21555SRichard Loweit is necessary to have both a standard El Torito boot catalog 46*bbf21555SRichard Lowecontaining a HDD-style partition table and boot code. 47*bbf21555SRichard Lowe.Nm 48*bbf21555SRichard Loweis intended to be placed in a MBR x86 boot partition to allow the system to find 49*bbf21555SRichard Lowethe standard 50*bbf21555SRichard Lowe.Fx 51*bbf21555SRichard Lowe.Xr loader 7 52*bbf21555SRichard Lowein the ISO filesystem later in the image. 53*bbf21555SRichard Lowe.Sh BOOTING 54*bbf21555SRichard Lowe.Nm 55*bbf21555SRichard Lowelooks for an ISO filesystem image on the device it was booted from and 56*bbf21555SRichard Loweseeks to read the primary illumos 57*bbf21555SRichard Lowe.Xr loader 7 58*bbf21555SRichard Lowefrom there. 59*bbf21555SRichard Lowe.Sh SEE ALSO 60*bbf21555SRichard Lowe.Xr installboot 8 61*bbf21555SRichard Lowe.Sh HISTORY 62*bbf21555SRichard Lowe.Nm 63*bbf21555SRichard Loweappeared in FreeBSD 12.0. 64*bbf21555SRichard Lowe.Sh AUTHORS 65*bbf21555SRichard LoweThis manual page written by 66*bbf21555SRichard Lowe.An Benno Rice Aq benno@FreeBSD.org . 67