How to reinstall Mac OS Snow Leopard?


Yesterday I tried to install Mac OS X 10.6.3 update in my Snow Leopard, I made the download of the package about 476 MB through System Update and it installed the package, but at the end of installation I got an error message: "There was an error, the installation was not completed" and my mac restarted and now it's just in the white screen with Apple logo and the loading icon.

I tried to boot with the Snow Leopard DVD and nothing happens, just the white screen. How can I reinstall the system or fix this?

Thank you
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Two possible ways to go about this.  To load your Mac from the DVD (Snow Leopard) that is in the drive, restart your Mac and hold the "c" key.  This will force your Mac to boot from the optical drive.  If you want to see what bootable systems are on your Mac, then press the "option" key during a fresh restart and it will show you any bootable volumes and give you the choice from there.  Hope this helps.


Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Or, if you have another Mac near by, [manually] download the Combo Update from Apple's site, boot your Mac in Target Mode (hold T while booting) and install it from the other Mac.
First try rebooting while holding down the shift key
The Ultimate Tool Kit for Technolgy Solution Provi

Broken down into practical pointers and step-by-step instructions, the IT Service Excellence Tool Kit delivers expert advice for technology solution providers. Get your free copy for valuable how-to assets including sample agreements, checklists, flowcharts, and more!

This article suggests unplugging all external peripherals and rebooting holding down the shift key:;title
marcoloppoAuthor Commented:
I got the boot pressing option button and I got reinstall the system, thanks.
marcoloppoAuthor Commented:
Tks to all your replies.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Mac OS X

From novice to tech pro — start learning today.