When using an iMac computer for any length of time, it tends to collect unnecessary programs, files and other junk that slows it down or makes it hard to keep. One alternative involves erasing the hard drive and reinstalling the operating system through the system restore utility. This effectively restores the iMac to its initial factory settings. The system restore utility is accessible after rebooting the computer.
Click on the Apple icon, and then click”Restart” in the drop-down menu.
Press”Command-R” when the screen goes dim. Continue holding until the retrieval window appears.
Click the”Disk Utility” choice, and then click”Continue” to open the Disk Utility window appears.
Select your main hard drive from the list of drives on the drive pane.
Click the”Erase” tab. Set the format to”Mac OS (Extended Journaled)” in the Format drop-down menu.
Click the”Erase” button. Await the process to finish, and then click”Quit.” The primary restore window looks.
Select”Reinstall Mac OS X,” where”” is your OS X version name. The OS X reinstall window looks.
Click”Continue,” then”Accept” to accept the OS X license arrangement. The drive selection window appears.
Click on the icon to your primary hard drive which you formatted, and then click”Install” to install a new operating system into the original system settings.