MacOS – How to i diagnose a failed Install of Snow Leopard

macosoptical-drivesnow leopardupgrade

I'm trying to upgrade from Leopard 10.5.8 to Snow Leopard, using the install CD.

The steps are:

  1. Insert the DVD
  2. Start the installation
  3. When is about the 40-50% of the installation, the system restarts
  4. Then ejects the DVD
  5. Snow Leopard is not installed

How can I know what's going wrong? What I have to do to fix it?

Best Answer

This has happened to me in the past. The solution that worked for me was making sure that the disc surface is clean and scratch free, and I mean very clean. Using normal CD wipes is good to get dirt off, but if it is scratched more than slightly, then you may have problems.

Or the disc may be defective from the factory, it does happen and they do exist.

Try talking to your local Apple Store about a possible replacement, or if worst comes to the worst, you can order one here (Apple still stocks them).

Hope this helps!