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Date:      Mon, 15 Sep 2014 16:18:24 +0300
From:      atar <atar.yosef@gmail.com>
To:        Warren Block <wblock@wonkity.com>
Cc:        "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org>, Derek Ragona <derek@computinginnovations.com>
Subject:   Re: Using the ISO releases on USB sticks.
Message-ID:  <3B3FBADD-B5B6-4B98-8BD6-701F6F8D21D7@gmail.com>
In-Reply-To: <alpine.BSF.2.11.1409141113370.27884@wonkity.com>
References:  <4D32ABC9-D0D0-48D2-98D3-FF1D72A4261E@gmail.com> <6.0.0.22.2.20140910111010.052bfb38@mail.computinginnovations.com> <A9FD5744-C05D-43C3-815D-F253F9B76FB0@gmail.com> <B7FAE207-78AC-431F-9D33-B8C8C76BD4E1@gmail.com> <alpine.BSF.2.11.1409141113370.27884@wonkity.com>

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Hi!

Just yesterday I've read your article from your site:

http://www.wonkity.com/~wblock/docs/html/disksetup.html

and I would want to know if you've written an article on how to build an 'im=
g' file which has the same content as the 'disc1.iso' file but that will be b=
ootable from a USB stick.

In addition, I'll be happy if you can tell me in more detail why does even a=
fter that I've extracted the content of the 'disc1.iso' file to a regular fo=
lder and then 'reassemble' it with the command (on Linux): 'xorriso -dev /tm=
p/my_FreeBSD_iso.iso -boot_image any system_area=3Dboot/boot0 -add /path/to/=
the/extracted/disc1.iso/folder' and copy the new ISO file into my USB stick w=
ith the dd command and then I reboot my PC and I see the boot prompt of the b=
oot0 boot manager but I don't get an option to boot the FreeBSD system I've j=
ust created. What's going wrong here?

Regards,

Atar.

> On Sun, 14 Sep 2014, atar wrote:
>=20
>> Just wanted to know please why does the command 'dd if=3DFreeBSD-i386-dis=
c1.iso of=3DmyUSB-stick' doesn't make the USB stick bootable like it would d=
oes for CDROMs or DVDs? What's the difference between CDROM and an USB?
>=20
> [top-posting deleted, please don't do that]
>=20
> dd just copies bytes from one place to another.  An ISO image file is not b=
ootable from a hard disk or USB stick, which require a different format and b=
ootcode.
>=20
> Some Linux systems use install files that are dual-purpose and can work fr=
om CD or USB.  FreeBSD does not do that.
>=20
> Some writing utilities can take apart an ISO image and convert it to a boo=
table USB stick.  I don't know if any of those work for FreeBSD ISO images a=
ny more.



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