Leopard upgrade problem... blue screen of nothingness
If you upgrade your Mac to Leopard, you may run into an issue. After the install is complete and it tells you that you need to restart, your machine restarts and then you end up with a blank blue screen. It's a nice shade of blue, but it gets a little boring after a while... and you're going to be looking at it for a long time. This happened to me, and I didn't know what to do. It's not clear if there is more "installing" going on, or if your computer is hung. Turns out it's the latter.
If this happens to you, here's what Apple support told me to do to fix the problem.
1 - Hold down the power button for several seconds until your computer turns off.
2 - Turn on your computer while holding down the "C" key on the keyboard. Continue holding down the "C" key for at least 10 seconds. This will cause your computer to boot from the DVD and this will result in your getting the Leopard install program.. again. You need to perform the upgrade, again, and this time it'll work.
If this happens to you, here's what Apple support told me to do to fix the problem.
1 - Hold down the power button for several seconds until your computer turns off.
2 - Turn on your computer while holding down the "C" key on the keyboard. Continue holding down the "C" key for at least 10 seconds. This will cause your computer to boot from the DVD and this will result in your getting the Leopard install program.. again. You need to perform the upgrade, again, and this time it'll work.
| Rating: | 100% positive, 2 total Votes |
| Categories: | Mac OS X Leopard |
| Added: | on Nov 02, 2007 at 4:34 pm |
| Added By: | an anonymous user |
| Searches: | leopard mac blue upgrade |


Apple now has a document on this, you can find it here: http://docs.info.apple.com/article.html?artnum=306857. The problem is a program call "Application Enhancer". This is a program used to customize the dock in OS X Tiger. If you have it installed, uninstall it before you attempt to install Leopard... you can check to see if you have it by going to System Preferences and looking in the "Other" section. If it is installed, there will be an item called Application Enhancer.
I followed the "Solution 2" in Apple's document, but it didn't work. The problem is when they tell you to "restart normally". If you just hit the power button, the change won't take affect and this fails. To get it to work, type:
on the command line. Once I did this, it worked as expected and I no longer had the blue screen after installing Leopard.