I've just tried this free prog and it creates a bootable image from the C:\esd\windows folder.
I chose Win7 as the os.
The image it creates boots OK.
Also the resulting iso image will do a clean install as well as an upgrade.
http://www.askvg.com/wbi-creator-fre...a-and-7-setup/




Thanks for this link

I upgraded 2 computer this morning

XP - win 8 pro

Vista - win 8 pro

With the Vista upgrade I was given a choice of creating an ISO file but
not when upgrading windows XP

Both there are new computers with no operating systems
I used my unused Vista and XP copies to and then upgraded.

The iso file allows me to create win 8 pro DVD that I can use to do
a fresh installation. What a fantastic deal for 40 dollars plus tax.

FD