You can boot your Mac from the USB flash drive to install the software on your Mac’s hard drive, Your USB drive will be erased and needs to have at least 12 GB of storage. This is a USB flash drive with a specific macOS or OS X installer on it. If you can’t use Internet Recovery Mode, you can create a bootable USB installer instead. It may take some time.įollow the onscreen prompts to complete your macOS or OS X installation.Ĭreate a bootable USB installer for macOS or OS X
If your Mac is from before 2009 or never had OS X Lion, click here to jump to the next section. This mode is only available on Apple computers made after 2009 that were running OS X Lion or later. The simplest way to install macOS or OS X on a new hard drive is by using Internet Recovery Mode. Install macOS using Internet Recovery Mode Internet Recovery mode can take a long time to start, depending on your connection. Make sure to select the parent hard disk in the sidebar.