DHCP is a common default setting for networks as it allows computers to “grab” an address as needed, so no changes should be required.
Either an Ethernet or Wi-Fi connection is required in either case, your Mac must be using DHCP (Dynamic Host Configuration Protocol) to capture an IP address. When using OS X Recovery or OS X Internet Recovery to reinstall the operating system, you must be connected to the Internet since the appropriate version of OS X is downloaded to the Mac prior to the start of the installation. While running Disk Utility (one of the functions of OS X Recovery) can be useful for determining whether there’s a problem with a drive or for formatting or partitioning a drive, OS X Recovery is most often used for installing OS X on a bare drive or re-installing it on a Mac that’s having startup issues. This requires an Internet connection, and the Mac prompts users to select a Wi-Fi network and enter a password to connect. OS X Internet Recovery is only available for Macs running OS X Lion (10.7) or later. But what if you’ve just replaced your drive with a new one, or if your startup drive has a problem? In that case, the Mac attempts to start up from Apple’s servers in what is known as an OS X Internet Recovery. Now usually OS X Recovery is launched from a partition on your hard drive referred to as the Recovery Partition. Restart your Mac from the Apple menu and try again. If your Mac shows the standard login screen or something other than the OS X Utilities listing, you may not have held down the Command and R keys long enough. Hold the keys down until the Apple logo appears on the screen at this point, you can remove your hands from the keyboard and wait until you see a Utilities window outlining the options seen in the image above. To bring up OS X Recovery on your Mac, hold down the Command and R keys simultaneously while powering up your Mac or restarting it. Invoking OS X Recovery or OS X Internet Recovery
Troubleshoots Internet connections and opens the door to using Safari to get online help.Allows verification and repair of drives using Disk Utility.Provides a way to restore a Mac from a Time Machine backup.If forcing your Mac to power down (holding the power button down for 10 seconds or so), then re-trying the startup doesn’t work, then it may be time to try re-installing OS X.įortunately, Apple makes it quite easy to attempt to fix a problem or re-install OS X through OS X Recovery. This useful capability provides four major functions: Rather than watching OS X load and present you with the familiar login screen, you may watch your Mac reboot itself repeatedly, display an error message, or prompt you to select a startup disk. On rare occasions, powering up your Mac may result in…problems.
OS X Utilities available in Recovery Mode
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