Why does my Mac say error while installing?

Some Mac users have encountered the Installation Failed error because their Mac has dropped an internet connection, or because of a DNS issue. If you’re having DNS issues, you may want to check to see if custom DNS has been set on the Mac (or at the router level), or if your ISP DNS servers are offline.

How do I fix a Mac installation error?

How to Fix the ‘macOS Could Not Be Installed’ Error

Restart and try the installation again.
Check the Date & Time setting.
Free up space.
Delete the installer.
Reset the NVRAM.
Restore from a backup.
Run Disk First Aid.

How do I fix a corrupted Mac OS X?

Restart your Mac, and press Command + R, while it’s restarting. Select Disk Utility from the macOS Utilities menu. Once Disk Utility has loaded, choose the disk you wish to repair – the default name for your system partition is generally “Macintosh HD”, and choose ‘Repair Disk’.

Why does reinstalling Mac OS X say try again later?

Solution #1 The reason why you are getting this “This item is temporarily unavailable. Please try again later” error on your computer is because of the Apple ID you are using to log in. If your Apple ID is not associated with an Apple OS you will continuously get this annoying pop-up.

What do I do if I can’t reinstall OSX?

Can’t Reinstall OS X On Your Mac? Try Resetting The PRAM

First, completely shut down your Mac via the Apple Toolbar.
Then, hold down Command, Option, P, and R buttons on your keyboard as you restart your Mac.
After the second chime, let go of the buttons and let your Mac restart as normal.

Why is my macOS damaged?

The cause of this error is an expired certificate, and because the certificate is expired, the “Install macOS” app for Mojave, Sierra, and High Sierra will not run. Fortunately, there is a fairly simple solution to the “damaged” installer problem. Below are the download links for the recent versions of macOS.

How do I reinstall Mac OS if recovery is unavailable?

Start up your Mac from a shut down state or restart it, then immediately hold down Command-R. The Mac should recognize that there’s no macOS Recovery partition installed, show a spinning globe. You should then be prompted to connect to a Wi-Fi network, and you enter a password.

How do you unlock Recovery HD on Mac?

Recovery HD can get locked sometimes which is indicated by the appearance of an error message that says, “Hard Drive locked”. To get rid of this problem, simply go to disk utility, click on the hard drive then click ‘enable journaling’ to unlock the drive.

How do you reinstall OS X on a Mac?

All modern Mac computers contain two separate methods to reinstall the operating system (by ‘reinstall’, we mean installation of a fresh OS X version). You can choose to install the operating system from a startup disk or via Internet Recovery.

Why do I get an error when I reinstall OS X?

If you connect by Wi-Fi, make sure it’s selected, and then supply the password. You should now be able to continue the recovery process and reinstall the operating system. This error message is an oldie, but could be seen by someone upgrading from OS X Yosemite and earlier to OS X El Capitan or later.

Can You reinstall macOS in Internet recovery mode?

When you are sure that the Mac is able to access Internet Recovery mode, there is another important task before installing the fresh operating system version. After a successful reinstallation process, the computer will contain only the default software (which is delivered with macOS).

How do I reinstall Mac OS with administrator password?

If you’re asked to select a user you know the password for, select the user, click Next, then enter their administrator password. Select Reinstall macOS from the utilities window in macOS Recovery, then click Continue and follow the onscreen instructions. Follow these guidelines during installation: