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Install clean with only an upgrade disc

So you thought you’d save a little money by purchasing the “upgrade” version

of Windows, but now you find yourself in a bit of a jam. Your hard disk

crashed, and without a full backup (see Chapter 6), you need to rebuild your

system. Or perhaps you’ve decided against an in-place Vista upgrade to avoid

passing on two years of accumulated junk to your new operating system. Either

way, you’ve undoubtedly discovered that your upgrade disc won’t install if it

can’t find an eligible Windows installation to upgrade.

In this scenario, Microsoft suggests that you install Vista and then install Win-

dows 7 over it. Not bloody likely.

Instead, just follow these steps to get a fresh Windows 7 installation from an

upgrade disc:

1. Use your Windows 7 disc to boot your PC, as described in “Install Win-

dows on an Empty Hard Disk” on page 10.

2. When setup loads, click Install now and proceed normally.

3. When prompted for the product key, leave the field blank, and just click

Next. Without the key, setup will ask you which edition of 7 you’d like

to install; make sure you choose the edition you actually own.

4. When setup is complete, you’ll be operating in the 30-day evaluation pe-

riod, but you won’t be able to activate 7 until you enter your product key.

To enter the product key, open a Command Prompt window in adminis-

trator mode, as explained in the section “Control User Account Con-

trol” on page 569, and then type this at the prompt:

cscript \windows\system32\slmgr.vbs -ipkxxxxx-xxxxx-xxxxx-xxxxx-xxxxx

where xxxxx-xxxxx-xxxxx-xxxxx-xxxxx is your Windows 7 product key,

taken from the DVD sleeve or the sticker on your PC case. Press Enter to

proceed.

If this doesn’t work, you may need to temporarily deac-

tivate

the UAC feature as described in Chapter 8, and

then try again. Then, reactivate UAC when you’re done

(should you so desire).

5. Next, activate Windows with this command:

cscript \windows\system32\slmgr.vbs -ato

and press Enter. To verify that activation was successful, type this:

cscript \windows\system32\slmgr.vbs -dlv

Install Windows 7 | 13

Get Started with

Windows 7

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