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Re: Does activating 8 disable 7?

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  • Subject: [mg113906] Re: Does activating 8 disable 7?
  • From: Murray Eisenberg <murray at>
  • Date: Thu, 18 Nov 2010 07:01:42 -0500 (EST)

For a copy of Mathematica on a stand-alone machine (i.e., one which does 
not employ a server-based License Manager to authenticate copies), a 
Mathematica license is tied to the particular hardware of the machine. 
The "MathID" generated by Mathematica is based upon that hardware.

If you upgrade from one version to another on the same machine, no 
problem (except using twice as much storage).

If you want to install a new version on a different machine, I believe 
that would be the same thing as if you wanted to install your existing 
version on a different machine: it's a matter of what your license 
allows. And typically that license allows installation on only one 
machine -- the one with the specified MathID.

If you want to deactivate Mathematica 7 on one machined and transfer 
your license, for either that or for Mathematica 8, to a new machine, 
you should of course contact Wolfram customer service.

On 11/17/2010 5:27 AM, AES wrote:
> Mathematica 8 arrived yesterday (that is, I downloaded the 1 GB disk
> image which I get for free through Premier Service).
> I'm just starting the drawn-out process of moving from a 2007-vintage
> MacBook running Leopard to a newly purchased MacBook Pro running Snow
> Leopard, doing this one app at a time rather than via a batch
> "migration" in the hope of leaving behind all the cruft that may have
> accumulated in the older MacBook during three previous system upgrades.
> If I install and activate Mathematica 8 on the new MacBook Pro (only),
> will that somehow disable or deactivate the copy of Mathematica 7 that's
> been left behind on the old MacBook (both Macs talk to our household
> WiFi LAN)?
> Or will it maybe just block one of them from starting up any time the
> other is running?
> I'd like to have an overlap period during which the older machine is
> still usable while the newer machine gets up to speed.

Murray Eisenberg                     murray at
Mathematics & Statistics Dept.
Lederle Graduate Research Tower      phone 413 549-1020 (H)
University of Massachusetts                413 545-2859 (W)
710 North Pleasant Street            fax   413 545-1801
Amherst, MA 01003-9305

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