#Disk utility for mac osx sierra how to
#Disk utility for mac osx sierra mac os x
#Disk utility for mac osx sierra mac os
#Disk utility for mac osx sierra install
#Disk utility for mac osx sierra upgrade

If you want to start over and wipe out the data, you need to go into Disk Utility to reformat the internal drive first, and then install macOS Sierra. If you want to install Sierra and leave the data intact, select Install OS X.

Your Mac will display an OS X Utilites window.

(You don’t need to select a network to proceed.) Make sure you copy the installer in Applications before you run the installer. Note: you can run the macOS Install OS X Sierra again if needed.

#Disk utility for mac osx sierra upgrade

The next upgrade should fix your problem. This indicates to me that you had a bad update. Click on the external drive and hit Return. The Disk Utility on Recovery should have been the new Disk Utility not the old one.

After a few moments, your Mac should display the Startup Manager, which will show you the available boot drives.

Press down on the Option key while the Mac boots.

Plug your external drive into your Mac.

You can quit Terminal and your drive is ready for use.

You should see Terminal display a “Copy complete” and Done notice.

Terminal will copy the installer file to your drive.

When that part is done, your Mac may ask you if you want to use the drive for Time Machine.

You’ll see that Terminal erases your drive.

To confirm that you want to continue, type Y and hit Return.

Terminal will tell you that it will erase your drive.

Terminal doesn’t display characters when you type it in.

Go back to Terminal and paste the copied code at the prompt.

Sudo /Applications/Install macOS Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/Untitled -applicationpath /Applications/Install macOS Sierra.app In El Capitan, Disk Utility was improved with a more colorful edition providing at-a-glance information of how you use your disk.

#Disk utility for mac osx sierra mac os

This used to be a staple feature in Disk Utility. Overview Disk Utility is an essential tool in the Utilities folder to reformat or re-partition a hard drive, mount or create a disc image, repair disk permissions or perform other disk first aid, in Mac OS X. As before, Disk Utility will take the volume through the Live Verification process. Click on the drive requiring repairs, then click First Aid again. The familiar Disk Utility window appears. Click Disk Utility to select it, then click the Continue button.

#Disk utility for mac osx sierra mac os x

If you noticed recently, Mac OS X El Capitan has removed a lot of handy features from the Disk Utility programone of them being the ability to burn disk images (DMG or IMG). Once the system has booted, four macOS Utilities are listed, one of which is Disk Utility (see image below).

Launch Terminal (/Applications/Utilities/Terminal.app). With the InstallESD.dmg selected in Disk Utility, click Burn in the top toolbar.

If your drive is named something else, you need to change Untitled to the name of your drive.) (In the Terminal command you will use, I use Untitled to represent your external drive.

Connect the external drive to your Mac.

If your really don’t want to use Terminal, there are a couple of free apps you can use. The process detailed below involves the Terminal. Change the name of your drive to Untitled you need to do this for the steps below. The drive will be reformatted automatically as part of the process. I’ve used different drives with success, including a VisionTek 120GB USB 3.0 Pocket Solid State Drive ($83 on Amazon) and an old 8GB Iomega Micro Mini Hard Drive.ĭon’t worry if the drive isn’t formatted for the Mac. You can use a USB flash drive or a hard drive with room for the installer software. If it automatically launches after download, quit the installer. Look for macOS Sierra in the list of apps that you’ve bought, and click on the Download button. You can download it again if you go to Purchased in the App Store. If you’ve already upgraded your Mac to Sierra, the installer is removed from the Applications folder.

#Disk utility for mac osx sierra how to

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