University of Vermont

Information Technology

Windows7 Bootcamp install Installing Windows 7 on a Bootcamp partition in Mac OS 10.6 Snow Leopard


If you have never edited the registry in a Windows OS, be forewarned that if you do it incorrectly, you may corrupt the install and have to start over. Assistance is available from ETS at the Computer Depot Clinic or by calling the Helpline.

Snow Leopard now supports the installation of Windows 7 on a Bootcamp partition. The following steps apply to any custom or clean installation of Windows 7 OS (32 bit or 64 bit) on a bootcamp partition using an UPGRADE installation DVD, such as the faculty-staff Work at Home media disks sold by the Computer Depot. (Note: If you are installing Windows 7 on a UVM faculty or staff computer, you will not need to edit the registry or run slmgr /rearm. This is only necessary for Work At Home installations on personal computers using the disks available for faculty and staff in the Computer Depot.)

Run the software updater in system preferences to get the update that enables Win7 support. Use bootcamp in Applications-Utilities Snow Leopard, ignore warnings about only using XP and Vista if they appear. Follow the other steps. Insert the Windows 7 installation disk in the mac and reboot. Hold down the option key, and choose to boot to the newly created partition if you are resuming this and did not choose to install Windows right away. Follow the steps in the Wizard.

When you see the screen BELOW in the setup process, DO NOT enter any product key, if prompted to do so, UNcheck the activate box, leave the key blank, click next.

TypeProdKey screen

Use custom install:

Choose Custom

You will be shown a screen that lists the newly created bootcamp partition. If you click NEXT and get an error--you can't load this because the partition is not formatted NTFS. So, select the partition and click the format button on that screen, format the Bootcamp Windows partition to NTFS, do not enter any product keys in the setup, let Win 7 install.

When the install completes, boot to the Windows 7 Partition. (Hold the Option key after the chime to choose)

open regedit (start button, type regedit in the white search box that opens when you click start once, right click regedit.exe, choose Run as administrator)

open regedit

go to
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\OOBE (see below)

right click on Media Boot install in the right pane, Modify
change the 1 to a 0

edit OOBE key

Save, exit regedit

Open a cmd window as administrator (START button, type cmd in search box, right click cmd.exe, choose Run as Administrator):

command window

type in slmgr /rearm

run slmgr


Once you are back in Windows 7, click the Start button, right click on Computer, choose properties. The window below will open, but the activation will NOT be complete as shown here until you click the link the says : "Activate windows now" which appears only before activation in the space where you see "change product key" in this image. When you click Activate now, enter the product key on the case that your Windows 7 Work at Home upgrade disk was in when you purchased it. You should then see "activation successful" and  your properties window will appear as below.

Activate now link

Documentation by Carol Caldwell-Edmonds
Enterprise Technology Services: Client Services
Manager, UVM Computing Helpline and the Computer Depot Clinic
University of Vermont
January 22, 2010

Last modified January 22 2010 03:58 PM

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