In the list on the left side, click on the name of your startup disk.Īctivate the 'Show Details' checkbox so you can see the progress of your verification operation. Click on the 'First Aid' tab at the top of the Disk Utility interface. Open the 'Utilities' menu and choose 'Disk Utility' to launch the application. Click on the right-arrow button at the bottom of the dialog box to continue. Select your language from the list that appears when your system restarts. Continue to hold down the 'C' key until you see the startup progress indicator, shaped like a spinning gear. This key command tells your system to start from the bootable installer you inserted in your optical drive. Press and hold the 'C' key the moment you hear your system's startup chime or just as your screen blacks out at the beginning of the restart process. Open the Apple menu and choose 'Restart.' When the dialog box that asks if you want to restart your computer appears, click on the 'Restart' button or wait one minute until your system begins to restart on its own. If your system uses a slot-loading internal optical drive, press the DVD into the empty drive slot. This will allow the disk to be formatted into the proper format and should allow it to install on the new HDD.Press 'F12' to open your Mac's optical drive and insert your Leopard installer DVD. Click on 'Options' and choose GUID Partition Table.Macintosh HD is the default name for Macs out of the box. Give the disk a name in the field on the right.Change the format to 'Mac OS X Extended Journaled.'.Go to Partition type and change the drop down from 'Current' to '1 Partition.'.If you're using the old one, follow these steps:

If you're using the newer system, it should by default auto-adjust the partition to the right size and format. Select the Partition button if you're using the native 10.11 Disk Utility or the Partition tab in the middle if you're using the lower systems. You should see the name of the hard drive (i.e. Once Disk Utility, look for the name of the disc on the left hand side. When you're loaded into the right menu, you'll look for Disk Utility. You will need to know the password for your Wifi network. You'll want to load the computer into what's known as Network Recovery (or Internet Recovery) by holding down the following buttons while turning the computer on: Command, Option, and R.

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