09-01-2015, 06:52 PM
The updates you're running needs free space to write the files to - a CD isn't suitable for that. I suppose a CD-RW setup as an drive might work but that's doubtful. If your system will boot from USB, get a 4 GB thumb drive and "burn" the ISO to that as a USB stick works just like a hard drive. While updates are important to an installed system, they aren't necessary to give the system a test drive...