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Boot from an ISO-File?

From: David A. Cobb
Subject: Boot from an ISO-File?
Date: Thu, 31 Mar 2011 13:32:42 -0400
User-agent: Mozilla/5.0 (X11; Linux i686; rv:2.0b9pre) Gecko/20110105 Thunderbird/3.3a2pre

The object: testing downloaded Linux (Ubuntu 11.04-pre) install media, avoiding burning more coasters.

From the documentation, I see that from the command line I can "mount" an ISO file image as a device, e.g. loopback loop (hda0,1)/iso/xubuntu-11.04-a3.iso

It would seem logical that I could then boot from that "device." Disks burned from these images are bootable -- whatever that requires. Annoyingly, they all then fail to mount the filesystem.squashfs that contains the Linux content. IIRC, the image uses LOADLIN to boot, perhaps indicating that this would require chain-loading; however, if I examine the files contained in the image, I see that it also contains a /boot/grub/grub.cfg file.

Installation would seem to be worlds quicker if I could leave the relatively slow CD access out of the equation -- and even more convenient if I could at least test that the image would not fail like all its predecessors.


David A. Cobb -- computing t-rex

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