Hi, Joe.
Yes. Your full retail license includes the two disks and a single product
key. You can install either version with that key, and, so long as they are
not both installed at the same time, you can switch back and forth as often
as you like (and have the patience for). As has been the case for many
generations of Windows, you can install and validate Windows an unlimited
number of times on the same computer, using that same product key each time.
As you apparently know, since you said, "next time I need to format my PC",
any switch between 32-bit and 64-bit - in either direction - requires that
the computer be rebooted into the other "bitness", and a reformat of the
Boot Volume (where the \Windows folder resides) is a very good idea,
although not strictly required. Be sure to preserve your DATA on an
external drive or other storage location that you will be able to restore
from or read later. But don't bother to backup the OS, of course, or your
applications, since they will need to be re-installed after you change
"bitness". (Just be sure you have original media for those apps, or that
you can re-access any that you downloaded.)
RC
--
R. C. White, CPA
San Marcos, TX
(e-mail address removed)
Microsoft Windows MVP
Windows Live Mail 2010 (15.3.2804.0607) in Win7 Ultimate x64)
"Joe99" wrote in message
Hi,
I upgraded to windows 7 32 bit when it was released and just found out that
i could have used the 64 version instead as my processor is 64 bit, does
anyone know if I'll be able to change over to 64 bit with my current
license, next time I need to format my PC?
I purchased the full retail version when windows was released last year and
it came with both 32 and 64 bit disc.
Cheers