If I install a PowerPC app on Snow Leopard, I understand it will install or give me a window to install Rosetta. (I did not install Rosetta with SL, as I had no PowerPC apps on the computer when I installed SL, and gained 12 GB free space from what I had when it ran Leopard)
What I would like to know is, if I now install an older PowerPC (one hard to duplicate economically with a Universal app) will the installation of the necessary Rosetta, also drag with it all the many GB of PowerPC stuff the leopard used to have, or will it only add Rosetta, which I think is only about 1-2mb.
I have a smaller hard drive (80GB), and I do not want to loose GBs of free HD space.
As far as the disk space "saved" this thread will help clear things up. Rosetta uses very little space. The big space difference is explained in the link above. In a nutshell, you didn't really gain any more than 5 or 6G from Snow Leopard, the rest is in how Apple reports it. You have more space reported, but files also take up more space now so it's a wash except for the 5G or so of languages, printers, and PPC code that SL trims out. The link explains it better.