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Install Win7 from USB

I'm currently in the process of building a computer (parts in the mail from newegg, should be fun) and since I need an OS, I figured I's take advantage of my student status to download a copy of windows 7 from the MSDN Academic Alliance.

Anyway, that download left me with a .iso file. One problem -- the .iso is too large to burn to a CD (it's 3 gigs, or so, I believe). So my question becomes, what's the best way to install the OS? Do I need to procure a DVD burner / blank DVD ? Is it possible to mount the .iso on a virtual drive on my external harddrive (via daemon tools or the like) and then install from that?

What's my best option?

Edit: .iso is not 15 gigs, the "Install space required" is 15 gigs. >.< .iso itself is just 3...

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marked as duplicate by akira, random Jul 4 '10 at 17:15

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Can you verify the size? Windows 7 isn't 15GB, it fits on a single layer DVD, which is 4.7GB –  MDMarra Jul 4 '10 at 2:56
    
If it's really 15GB, you won't be able to burn it to a DVD either (Blu Ray? Probably; I don't have one so I'm not positive). I have a feeling it's a bit smaller than that, though. –  Michael Todd Jul 4 '10 at 2:57
    
Yeah, not to be redundant, but yeah ;-) I'd say your best option is to go back and double-check the size, and if it's really 15 GB, complain to Microsoft that you got the wrong file. –  David Z Jul 4 '10 at 3:24

1 Answer 1

up vote 2 down vote accepted

Follow the steps from the following site to copy the ISO to a flash drive and install it from there:

Windows 7 USB/DVD Download Tool

(I'm not sure, but if you purchased an Upgrade version of Windows 7, you might not be able to reboot via USB or DVD drive and install it; you may be required to mount the ISO and install it from your current O/S.)

If you're not trying to boot up via a flash drive and install from there, it's much easier just to mount the ISO and install it from the mount while using your current O/S.

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