Re: [orca-list] new Versions of Sonar are out

[Christopher Chaltain <chaltain gmail com>]

I have no idea what the problem is here, since the thread was truncated, 
but Kyle's supposition is based on dated information. Ubuntu switched to 
hybrid images in 2011. Here's an article announcing this 
http://www.tuxgarage.com/2011/06/ubuntu-switched-to-hybrid-disc-images.html

I've been using dd to write Ubuntu images directly to USB sticks for 
years now. Of course, if we're talking about a version of Ubuntu like 
Ubuntu 10.04 then Kyle might be right.

On 05/02/2015 11:06 AM, Kyle wrote:
> I think I understand what is happening that would cause Sonar to fail to
> boot from a USB stick with multiple images, whereas Ubuntu-based distros
> boot with no trouble. Ubuntu-based isos are pure iso images, meaning
> that they need to be burned to a DVD in order to be recognized as
> bootable. Writing them directly to a USB stick would result in a
> non-bootable image, as there is no x86 boot code in the expected place
> where the computer can find it. Arch-based images, including Sonar and
> Manjaro, are hybrid images, meaning that they already have all code
> necessary to make them bootable when written directly to the USB stick.
> Using a boot tool such as the one you describe has been known to result
> in non-bootable images, as the computer can become confused by the
> conflicting boot code. It seems it is rather difficult to find out once
> you have downloaded an image whether it is a pure CDROM iso9660
> filesystem or a hybrid that is to be booted directly from USB. Using my
> file command yields the same description of both types.My best
> recommendation is to check the websites of the distros you want. They
> usually indicate which type of image they prepare. If not, the trial and
> error method works best. Write the image to your stick using your boot
> tool, and if it fails, write it using a direct method. Hope this helps.
> Sent from my x86 boot code

--
Christopher (CJ)
chaltain at Gmail