Currently Being ModeratedMar 8, 2013 7:27 PM (in response to Phillip210)
You'll need to separately reinstall Mac OS X; this is done by running the installer after erasing the drive. Both options are available by starting the computer with the Command and R keys held down.
Currently Being ModeratedMar 8, 2013 8:15 PM (in response to Phillip210)
Niel is correct, however reinstalling OS X is an extremely rare occurance, it's not like MS Windows that needs to be frequently re-installed. The best thing you can do for your system is to let it run and leave it alone, try to forget about third party utilties to make it run better, most of what is commercially available is already built into OS X. In other words, just enjoy the system and let it run.
Currently Being ModeratedMar 9, 2013 2:20 AM (in response to Phillip210)
hey guys thank you so much, I just bought me a 27inch Imac, it is such a beautiful machine, I'm new to apple and there isso much to learn. I had to reformat my pc due to a nasty virus, I have just downloaded avarst for mac, just in case. once again thank you so much.
Currently Being ModeratedMar 9, 2013 8:33 AM (in response to Phillip210)
Remove Avast and all antivirus software, please re-read my last post. Antivirus software on OS X tends to create more issues than they solve. The BEST (bar none!!!!!) thing you can do for your system is to keep it up-to-date by running Software Update at least 1x per week. Look in System Preferences and you will learn how to set how to set it to automatically check.