What is the best way to make an ISO file out of a DVD?

Question

I downloaded the huge Windows 7 .iso file and burnt it to a DVD.

I then used that DVD to install Windows 7 on my machine and then realized that I the .iso file was on the Vista operating system that I replaced with Windows 7 (didn't upgrade).

So now I would like to get the .iso file back but with the same key, etc.

How can I convert the DVD I burned back into an .ISO file?

Answer 1

ImgBurn is a nice, free tool for creating disc images as well as burning them.

Answer 2

Like @Joakim points out in the comments: you can also download the iso again. But if you want to save on bandwidth:

LC ISO Creator is very small, lightweight, free and portable!

Answer 3

ISORecorder will create ISOs from discs.

Answer 4

MagicIso

it offers Virtual image creation, burning existing images, support different types ISO, UIF, NRG, BIN and CUE, mount Virtual CD/DVD drives and more.

[EDIT]

I didn't know it's not free, though it doesn't require any registration or anything like that!

Answer 5

You can install Windows 7 on up to 3 computers with the same key (Win 7 FAQ) and the key is not tied to a particular ISO download.
An easy way to create an ISO from a disk is to use ImgBurn.

Answer 6

I like MagicISO ... not free, but well worth it.