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Date:      Mon, 15 Sep 2014 16:18:24 +0300
From:      atar <>
To:        Warren Block <>
Cc:        "" <>, Derek Ragona <>
Subject:   Re: Using the ISO releases on USB sticks.
Message-ID:  <>
In-Reply-To: <>
References:  <> <> <> <> <>

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

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?



> On Sun, 14 Sep 2014, atar wrote:
>> 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?
> [top-posting deleted, please don't do that]
> 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=
> Some Linux systems use install files that are dual-purpose and can work fr=
om CD or USB.  FreeBSD does not do that.
> 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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