[bigt0169]

Ever since I downloaded 10.4.9 I have been having trouble booting. I have a MBP 2.0 CD and when I start up my computer it won't locate my wireless connection and then I then I try to locate my wireless connection my computer fails. I get a black screen that comes down over the GUI and it says that the OS has failed and hold down the power button and restart. How can I get rid of 10.4.9 and go back to 10.4.8? I had no trouble with that. Thanks.

[dimmer]

Ick, sadly, you'll need to go back and do an Archive and Install from your 10.4 CD/DVD, then download the 10.4.8 update (which you should be able to find somewhere) -- but I'd try troubleshooting first: set up a new account, see if issue prevails, "repair permissions" as that's the magical incantation for OS X (it does nothing more than "Rebuild Desktop" did in OS 9, but, hey, sometimes that worked as well!)

Hope that helps a little, you should get better info from others here.

[Simon]

Dimmer has some good advice there. But in case that doesn't work, before you start over from scratch, download the full OS 10.4.9 update form Apple's website (not the .8->.9 "delta" update, the full 10.4.x->10.4.9 "combo" update) and apply that to your system. Sometimes that helps.

[silverflyer]

The above may work, if it doesnt you can also try DiskWarrior.

DiskWarrior 4