Install Windows 7 twice (dual boot) - licensing issues? [duplicate]

Solution 1:

License wise that would not work. 1 license, 1 computer, 1 install. Windows 7 is licensed per install, not per system. In other words, every install of Windows requires it's own license.

Which is why RedGrittyBricks advise is good. Install linux as the dual boot alternative.

From MS's Windows 7 EULA:

1. OVERVIEW .
a. Software. The software includes desktop operating system software. This software does not
   include Windows Live services. Windows Live is a service available from Microsoft under a
   separate agreement.
b. License Model. The software is licensed on a per copy per computer basis. A computer is a
   physical hardware system with an internal storage device capable of running the software.A
   hardware partition or blade is considered to be a separate computer.

2. INSTALLATION AND USE RIGHTS.
a. One Copy per Computer. You may install one copy of the software on one computer. That
   computer is the “licensed computer.”
b. Licensed Computer. You may use the software on up to two processors on the licensed
   computer at one time. Unless otherwise provided in these license terms, you may not use the
   software on any other computer.
c. Number of Users. Unless otherwise provided in these license terms, only one user may use the
   software at a time.

Solution 2:

How about using virtualbox and creating a virtual machine for your fast booting clean install. You can install windows without a licence and use it for 4 months - by which time you are probably due another clean install.

I've got multiple licences with my technet account but still mostly use virtual machines for testing