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#Macos catalina install time how to#
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#Macos catalina install time serial#
#Macos catalina install time mac#

If the issue persists, erase the drive and try to reinstall the OS. Then, boot into Recovery Mode, run First Aid and try to reinstall the OS without erasing the drive. If your MacBook says that an error occurred while preparing the installation, boot into Safe Mode and check your date and time settings.

#Macos catalina install time mac#

If your Mac has an SDD, take it to Apple for repair. If your machine is equipped with an HDD, you need to replace it. If you’re still getting the same error even after erasing the drive, this may indicate your disk is faulty. Exit Terminal and try to reinstall macOS.Then, create a logical volume on the disk with this command:ĭiskutil cs createVolume “Macintosh HD” JHFS+ “Macintosh HD” 100%.After that, recreate the disk with the help of the #> diskutil cs create “Macintosh HD” disk0 disk1 command.Reformat your drives by running the following commands:.Now, run the #> diskutil unmount force disk2s1 command to force-unmount the logical volume.For most users, the HDD is disk 1, and the SSD is disk0. It’s important to note which is the HDD, and which is the SSD.Check your drive Unix names by running the #> diskutil list internal command.Use the Utility menu and launch Terminal.

#Macos catalina install time serial#

This is usually a combination of a Serial ATA drive (HDD) and an SSD.įirst, erase the disk with Disk Utility and reformat it using the macOS Extended (Journaled) option. As its name suggests, a Fusion Drive consists of two different drives fused together. Use this solution only if your macOS device is equipped with a Fusion Drive. Recreate Your Fusion Drive and Add a New Volume on It Go back to the Utility menu, and select Reinstall OS X.Click on Apply and Done, and then quit Disk Utility.

#Macos catalina install time mac os#

In the new panel, set the partition scheme to GUID, and select the format type to Mac OS Extended (Journaled).

Select your drive and then click on the Erase tab.

Then select Disk Utility and hit Continue.

Wait between 5 to 10 minutes until the Utility menu appears on the screen.

Release the keys when the globe or Apple logo appears on the screen.

Restart your Mac, and press and hold the Command, Option, and R keys right after the chime.

Erase the Drive Before Reinstalling the OS If reinstalling the OS won’t work, try erasing the drive first.

Exit Disk Utility, go back to the Utility Menu, and select Reinstall OS X.

You may need to wait for a few seconds, or a couple of minutes until the Done button becomes clickable.

Select Disk Utility and click on Continue.

Release the keys when the Utility menu appears on the screen.

Restart your MacBook, and press and hold the Command and R keys right after you hear the chime.

Reinstall the OS Without Erasing the Drive

If you’re offline, edit the settings manually using the date format.

If this command doesn’t work, try running sntp -sS. Run the ntpdate -u command to set the date and time automatically.Click on Utilities, and then select Terminal.Release the keys when you see the Apple logo on the screen.Then turn it on, and immediately press and hold the Command, and R keys to enter Recovery Mode.If you can’t boot up your Mac properly, use macOS Utilities and Terminal to edit your date and time settings.

Restart your Mac, and try to reinstall the OS. Go to System Preferences, click Date and Time, and set the date and time zone automatically. Let your Mac set up the date and time settings automatically. Check Date and Time SettingsĪdditionally, check your date and time settings.

If the error persists, restart your device two or three times in a row and try again. If you own an Apple Silicon device, you need to shut down your Mac, turn it on, and then continue to press the Power button until the Startup Options appear on the screen. Restart your Mac with the Shift key pressed to boot into Safe Mode.

#Macos catalina install time how to#

How to Fix “An Error Occurred While Preparing the Installation” on Mac Boot Into Safe Mode

Recreate Your Fusion Drive and Add a New Volume on It.

Erase the Drive Before Reinstalling the OS.

Reinstall the OS Without Erasing the Drive.

How to Fix “An Error Occurred While Preparing the Installation” on Mac.