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Date:      Sun, 14 Sep 2014 11:20:13 -0600 (MDT)
From:      Warren Block <wblock@wonkity.com>
To:        atar <atar.yosef@gmail.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:  <alpine.BSF.2.11.1409141113370.27884@wonkity.com>
In-Reply-To: <B7FAE207-78AC-431F-9D33-B8C8C76BD4E1@gmail.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>

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On Sun, 14 Sep 2014, atar wrote:

> Just wanted to know please why does the command 'dd 
> if=FreeBSD-i386-disc1.iso of=myUSB-stick' doesn't make the USB stick 
> bootable like it would does 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 bootable from a hard disk or USB stick, which require a different 
format and bootcode.

Some Linux systems use install files that are dual-purpose and can work 
from CD or USB.  FreeBSD does not do that.

Some writing utilities can take apart an ISO image and convert it to a 
bootable USB stick.  I don't know if any of those work for FreeBSD ISO 
images any more.



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