For the record, the process is different (and more direct?) on Mac OS X: just rename the existing Mathematica.app, say to Mathematica_8.app, and drag Mathematica.app from the opened version 9 .dmg to /Applications.
On Dec 3, 2012, at 4:05 AM, Scott Bennett <email@example.com> wrote:
> There was when I installed it on both my Windows 7 and Windows 8 computers. It was just a check box during the install > > On Dec 2, 2012, at 3:58 AM, Reinhard Simonovits <Reinhard.Simonovits@uni-graz.at> wrote: > >> soon I will receive a M9 copy on my Window laptop. >> >> A lot of code is running on M8. So I don't want to have M8 uninstalled >> when M9 is being installed. >> >> I would like to have both on my machine, M8 and M9. >> >> Do you know if there is an option on the M9 installer menue to have M8 >> untouched? >> >> If not is there a work around?
--- Murray Eisenberg firstname.lastname@example.org Mathematics & Statistics Dept. Lederle Graduate Research Tower phone 413 549-1020 (H) University of Massachusetts 413 545-2838 (W) 710 North Pleasant Street fax 413 545-1801 Amherst, MA 01003-9305