12/11/2022 0 Comments Reinstall macos sierra![]() ![]()
You will see the “macOS Utilities” window.Your Mac will start up from macOS Recovery.Keep holding these keys until you see the Apple logo or a spinning globe. Turn on your Mac and immediately press and hold the Command (⌘)-R keys together.Turn off your Mac, you can do so by pressing and holding the power button. #Reinstall macos sierra update#Then you can use Terminal (Applications / Utilities) to update your date and time settings. However, the option above may not work for you as you may not access System Preferences if your Mac stuck in the middle of a macOS update.You may also want to check the “set date and time automatically” box to turn on the option to set date and time automatically. If your settings are not correct, update them. On your Mac, click System Preferences, then choose Date & Time.Make sure that the date and time on your Mac are set correctly. Simply restart your Mac to see if this fixes your problem. After trying each step, test to see if you’ve fixed your issue. Please try the following troubleshooting tips in order. See also: The macOS Installation Couldn’t Be Completed Error Fix ![]() This article explains how you can fix this problem. #Reinstall macos sierra install#You may see this message when you want to install or reinstall an update or upgrade. “An error occurred while preparing the installation. A common installation error message that a lot of users are receiving is below: However, you may run into Mac update issues. #Reinstall macos sierra software#The installation process will begin.Updating your Mac to the latest version of the macOS software is usually easy and straightforward. If you booted from a functioning recovery partition, click the “Reinstall macOS” button. ![]() With your information wipe complete, you are now ready to reinstall macOS. If you choose three or five passes, you might want to leave this running overnight. If you opted to wipe your drive securely, this might take a while-30 minutes to an hour is not unreasonable for one pass. Just give your drive a name (I recommend “Macintosh HD”, just for consistency’s sake), then click “Erase” to start the overwriting process. You only need to write over a drive once to securely wipe it, but if you’re paranoid you can also wipe it three or five times.Ĭlick “OK” once you’ve decided, but remember: if your Mac has a solid state drive, you do not need to use these options. Now move the dial up, to randomly write data over your entire drive. You still need to wipe the drive, however, or your files will remain in place, so skip to the end of this step to do so.) (If your Mac has a solid state drive, you can skip this part: your SSD will already securely erase files thanks to TRIM. If you’re wiping a mechanical drive, click “Security Options” in the window that pops up. We recommend backing up files before you do this, just in case, but otherwise you’re ready for step three. Your user accounts and files will stay exactly where they are-only your operating system will be overwritten. If you want to re-install your operating system, but leave your files in place, you can skip this step. RELATED: 8 Mac System Features You Can Access in Recovery Mode Step Two: Securely Wipe Your Hard Drive (Optional) Once you’ve managed to open up the Recovery Mode in some fashion, we can move on to wiping your drive securely. #Reinstall macos sierra download#You can access recovery without a partition using Network Recovery: hold Command+Shift+R while turning on your Mac and it will download the Recovery features for you. Failing that, you can create a bootable USB installer for macOS Sierra, and boot from that by holding “Option” while turning on your Mac. If neither of these options work, don’t panic! You’ve got a couple of options yet. On those devices, hold “Option” while turning your computer on, then select the recovery partition instead. If you’re using an older Mac (from 2010 or earlier), there’s a chance that you can’t use Recovery Mode. ![]()
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