But they all have USB ports and can boot from a USB device.) (Also bear in mind that DVD drives are not really standard anymore in new computers.
Have you considered to make a bootable USB stick instead ? It is a lot faster to install Windows from USB.Ī 8 GB USB stick costs about the same money as a couple of dual-layer DVDs and the USB can be re-used for something else after use. This will give you an effective capacity of 8.5 GB. Obviously you can burn to a dual-layer DVD. Rolling your own ISO starting from a base Windows ISO and adding only the desired patches (and possibly some drivers) is MUCH easier and you can control the size of the resulting ISO with a lot less hassle. Modifying a pre-build ISO to take out some updates is possible but it is an arcane art.Įxtremely complicated and you will need to have a very good understanding of how slipstreaming works. The DVD format doesn't support compression on the DVD in this way.
You can compress the ISO file however you want when it sits on your harddisk, but the data is always written UNCOMPRESSED to the DVD. As you already noticed: Compression is not going to work.
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