Frequent MacOS Massive Sur Issues and Methods to Repair Them

With the release of MacOS Big Sur, Apple is leaving the world of MacOS X and entering a new generation – MacOS 11. Big Sur brings new features to the Mac, including a redesigned user interface, a major update to Safari, and improvements that are expected Performance and energy efficiency will increase.

What if you have problems? As with any operating system, MacOS Big Sur has its own set of problems. Here are the most common MacOS Big Sur problems and how to fix them.

Problem: MacOS Big Sur will not install on your computer

If you're having trouble installing macOS Big Sur on your Mac, first make sure you have a compatible computer (see below). Otherwise, check that your device has enough free space on the main hard drive or solid-state drive to properly install the new operating system. You need 50 GB of free space to continue with the installation.

compatible Macs

  • MacBook: Early 2015 or newer
  • MacBook air: Mid-2013 or newer
  • MacBook professional: Late 2013 or newer
  • Mac Mini: Late 2014 or newer
  • iMac: Mid 2014 or newer
  • iMac professional: All types
  • Mac professional: Late 2013 or newer

If you have at least 50GB of free space on your computer and Mac OS Big Sur is still complaining about not having enough space, Time Machine is probably the culprit. Time Machine saves snapshots of your drive to support the next backup. You can temporarily delete these Time Machine snapshots to resolve the issue. Follow the steps below to remove your Time Machine backups and then install Mac OS Bir Sur.

Step 1: Open the Terminal app on your Mac.

Step 2: Type tmutil listlocalsnapshots / and press Enter to view all of the snapshots on your computer. The snapshots are displayed as files that begin with the word "com".

Step 3: To delete each snapshot, type sudo tmutil deletelocalsnaps, then type the name of the snapshot. Example: sudo tmutil deletelocalsnapshots 2020-08-05-002051

Step 4: Repeat the above command to delete all snapshots.

Step 5: If you type tmutil listlocalsnapshots / and press Enter, Time Machine snapshots will no longer appear.

Step 6: Now try to install MacOS Big Sur.

Problem: MacOS Big Sur is draining the battery quickly or showing battery problems

Some users have reported that the battery life of their MacBook or MacBook Pro decreased drastically after installing MacOS Big Sur. In addition, some users will receive a battery service warning message. Fortunately, this problem can be easily fixed by following the instructions below to reset your Mac's PRAM.

Step 1: Turn off your MacBook.

Step 2: Press and hold Command + Option + P + R.

Step 3: Turn on the machine and press and hold the above buttons.

Step 4: Release the buttons once the Apple logo appears and disappears three times.

Step 5: Your MacBook should now start normally.

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Error: Cannot login after installing MacOS Big Sur

If you found that you were unable to log in to your computer after installing macOS Big Sur, first make sure that you are entering the correct password. If the credentials are correct, you can try resetting your computer's system management controller (SMC) to resolve the problem.

For an iMac, just turn off the device and unplug the power cord for 30 seconds. Otherwise, you'll have to go through a slightly more complicated procedure on a MacBook. This process can be different regardless of whether your Mac has an Apple T2 security chip. First, follow the instructions below to see if your machine has a T2 chip.

Step 1: Hold down the Option key on your keyboard.

Step 2: Hold down the key and click the Apple menu on the Mac toolbar.

Step 3: Choose System Information.

Step 4: Select the Controller option on the left.

Step 5: Now, if you see something on the right side of the window that says the Apple T2 chip on it, your computer has the T2 chip. Otherwise your device will not have the T2 chip.

Reset SMC if your MacBook has a T2 chip

Step 1: Shut down your Mac.

Step 2: Press and hold the power button for 10 seconds.

Step 3: Make sure your Mac is still turned off. If not, shut it down again.

Step 4: Hold down Ctrl + Option + Shift keys.

Step 5: Count to 10 and press and hold the power button.

Step 6: Press and hold all buttons and the power button for 10 seconds.

Step 7: Release the buttons and try turning on your Mac.

Reset SMC if your MacBook doesn't have a T2 chip

Step 1: Shut down your Mac.

Step 2: Hold down Ctrl + Option + Shift keys.

Step 3: Still holding down all the buttons and pressing the power button.

Step 4: Press and hold all buttons and the power button for 10 seconds.

Step 5: Release the buttons and try turning on your Mac.

Problem: Bluetooth or Wi-Fi stopped working in Big Sur

If your Bluetooth or Wi-Fi connectivity stops working after installing MacOS Big Sur, you are not alone, but the solution is relatively simple. If bluetooth is the problem, just hold down the Shift key, click the bluetooth icon in your menu bar, select the Debug option and select Reset bluetooth module. If Wi-Fi is the problem, we recommend resetting your Mac's SMC. Follow the steps below to reset your Mac's SMC.

Step 1: Shut down your Mac.

Step 2: Hold down Shift + Ctrl + Option on your keyboard.

Step 3: Press and hold the keyboard keys and press and hold the power key.

Step 4: Press and hold all buttons and the power button for 10 seconds.

Step 5: Release the buttons and turn on your Mac.

Adobe Lightroom CC iMacDaven Mathies / Digital Trends

Problem: Your apps don't work on macOS Big Sur

If your favorite apps suddenly stop working after installing macOS Big Sur, the first thing to do is to uninstall and then reinstall the application. Sometimes your application may need to be reset with the operating system before it works properly. Otherwise, you should check the software manufacturer's website for more information to make sure your application is compatible with macOS Big Sur.

Problem: Your ability to sign in with TouchID has ended

If you've found you are no longer able to sign in to TouchID, don't worry – your finger is unlikely to need to be replaced. Instead, try resetting your Mac's SMC using the instructions below. Alternatively, you can try removing and re-adding your fingerprint by going to System Preferences and then selecting Touch ID.

Step 1: Shut down your Mac.

Step 2: Hold down Shift + Ctrl + Option on your keyboard.

Step 3: Press and hold the keyboard keys and press and hold the power key.

Step 4: Press and hold all buttons and the power button for 10 seconds.

Step 5: Release the buttons and turn on your Mac.

Error: Mac is stuck in Activation Lock

Some users have complained about their Macs getting stuck under Apple Activation Lock when upgrading to MacOS Big Sur. For now, the only solution to this problem is to contact the Apple support team and have them handle the problem. Since Activation Lock prevents you from using your system, it is considered a serious problem. You may even need to take the Mac to a local Apple Store.

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