I just had a great nephew whose a computer tech in Seattle for apple explain to me that when an iso file is burnt onto a dvd it expands it. So when you copy off the dvd, it is no longer an iso. I would need to install a program to turn things into iso s . He probably dummied it down for me some, but it explains why I couldn't do it. He then started to explain how to download/ install (should be in software center) on and make it into an iso again. I followed the download and install. Still think I'll get one made online.
The generic description of an ISO is an archive that is a perfect sector-by-sector representation of an optical disc. Yes, when you burn an ISO archive to a CD/DVD, the software basically expands the image and creates an identical copy of the data to the target device. Given this description, you can see that there would be several ways to create a usable copy of these LiveCD's. However, the easiest solution is to create an image of the LiveCD and then re-create it.
Creating an ISO from CD/DVD
1) Place the CD/DVD into your optical drive.
2) Find the correct blocksize and blockcount:
isoinfo -d -i /dev/cdrom
Make sure to write down the listed blocksize and blockcount for our next step.
If needed, change /dev/cdrom to reflect your optical drive.
3) Create the image using DD:
dd if=/dev/cdrom bs=blocksize count=count of=~/whatevername.iso
Replace bs=blocksize and count=count with the blocksize and blockcount from Step 2. Only change what is highlighted in red.
If needed, change /dev/cdrom to reflect your optical drive. You can also modify ~/whatevername.iso to reflect whatever destination and filename you would like to use. ~/ is your home directory.
4) Burn the newly created image to a new CD/DVD and enjoy!
Edited by Kaosu, 08 July 2014 - 09:01 PM.