Sure, you can install 10.5.8 on that machine whether on a separate HD or partition your present HD into two volumes. Be sure to backup before. Adobe has given up supporting Flash for PPCs so you're stuck with 10.1.102.64 which doesn't work with all websites. There is a hack of 11.1.102.55 which I use on my MDD. (Facebook may have caught up with this by now.) You can get it at <http://www.steelbin.com/FPforFBPPC.zip>. On 10/10/12 at 11:33:27 -0700, jonny <g4 at salemoregon.com> wrote: >I am running OS 10.3.9.... But to use google earth or once >in a while, a browser with updated Flash, I need to use 10.5. > >I would like to boot to 10.5 (on a separate HD). Am I able to do >this with my machine? -- T.T.