Otherwise, you may need to do one of the following. You can click Show Details to see more information about the repairs. If Disk Utility reports that the disk appears to be OK or has been repaired, you’re done. If Disk Utility tells you the disk is about to fail, back up your data and replace the disk. In the sidebar, select the disk you want to repair. When the Apple logo appears, you can release the keys. Once your Mac restarts and you hear the startup chime, hold down the Command and R keys. Startup is complete when you see the utilities window:ĭisk Utility: Use Disk Utility to repair or erase your startup disk or other hard disk.ĭisk Utility for Mac: Repair a disk using Disk UtilityĬhoose Apple menu > Restart. ![]() To start up from macOS Recovery, hold down Command (⌘)-R immediately after turning on or restarting your Mac. Because you have OS X El Capitan installed on your MacBook, we can access Disk Utility from macOS Recovery. Let's also use Disk Utility to verify there are no issues with your Macintosh HD. MacOS Sierra requires 8.8GB of storage space to install. What does your computer show for Capacity and for Available (usually represented in GB)?.Right-Click on Macintosh HD and choose Get Info.Next, let's confirm that you have enough free space on your Macintosh HD for this installation: Use Time Machine to back up or restore your Mac If you have not already done so, please refer to the instructions below: ![]() The first thing I want to suggest is that you make sure you have a backup of your computer before making significant changes to it. Based on your model and the fact that you have OS X El Capitan currently on your system, macOS Sierra should be able to install. I understand you are trying to download and install macOS Sierra on your MacBook Pro, but after several attempts, the application won't install.
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