![]() ![]() Apple also offers Shift-Command-Option-R, which installs the version of OS X or macOS with which your computer shipped, or the next oldest compatible system still available for download. While Command-R at startup always installs whatever the most recent version you installed on your Mac, holding down Command-Option-R brings down the very latest compatible version that can be installed. After your macOS boots normally, attempt to open Disk Utility conventionally and see if the issue is now resolved. Running First Aid on the OS drive Restart your Macintosh from the Apple menu and wait for the drive to be repaired at the next startup. However, if you have normal Recovery installed and it refuses to install macOS for some reason, you can manually invoke Internet Recovery. Once it’s active, click on it, then quit Disk Utility. There, the Mac reaches out over a Wi-Fi or ethernet connection to download the relatively modest Recovery software, which then bootstraps the download of the full macOS installer.Īpple says Internet-based Recovery should happen automatically on supported models, and you should see a spinning globe when that mode is invoked while the download occurs. Most 20 models with a firmware upgrade applied. MacOS Recovery over the Internet, which requires either a Mac model released in 2012 or later, or Otherwise, you would need to use the recovery media (either a optical disc or USB drive depending on model) that originally shipped with the MacBook Pro to restore it to Mac OS X 10.6.x (aka Snow. When complete, it installs it and reboots, and places the installer in the Applications folder. Failing finding it, Recovery downloads the currently installed version of macOS (or OS X), which is about 5GB.
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