![]() You may not install to this volume because it has a disk password.You may not install to this volume because the computer is missing a firmware partition.You may not install to this volume because it is currently being encrypted.The update cannot be installed on this computer.If you have backed up your Mac to an external hard drive with Time Machine, you can simply restore from the Time Machine backups. Here is what you should do if you've encountered data loss after the macOS software update: Though Apple has made a precaution that important files may get lost if the macOS software update is interrupted, many of you still forgot to back up your MacBook Air/MacBook Pro/iMac/Mac mini. How to restore or recover lost files after macOS Big Sur update? If you are using third-party software to back up your Mac, check if it's ready for macOS 11. Note that these backups and new backups created after are only compatible with Mac computers running Big Sur and later. ![]() In that case, your existing backups are also upgraded to be used on macOS Big Sur. Suppose you upgraded to macOS Big Sur on a Mac that uses a Time Capsule or other network storage device as the backup destination. Therefore, it's always recommended to back up Mac files before every major macOS software update using the built-in Time Machine. It makes data backup with third-party apps difficult, especially those that offer bootable backups. Since macOS 10.15 Catalina, Apple split the startup disk into two separate volumes, Macintosh HD and Macintosh HD - Data. Built-in or Third-party Apps Issues in macOS Big Sur Poor Performance When Using macOS Big Sur Startup issues after installing macOS Big Sur Fail to download and install macOS Big Sur Resetting NVRAM and SMC may fix the Mac running slow issue.In the following sections, we will talk about practical solutions to fix macOS Big Sur problems. SMC is related to fans, battery, power, and some other features. NVRAM is related to display resolution, sound volume, startup-disk selection, and recent kernel panic information. It will shut down all running programs and freshly start the Mac.Ĩ. Performing a restart may get your Mac back on track. With the built-in disk management tool on Mac, you can see whether there is a problem with your disk.ħ. Malware and virus can also make the Mac performs sluggishly. Run Disk Utility First Aid to check and repair your disk. Find out and kill resource-consuming processes with Mac Activity Monitor.Ħ. When you unconsciously open a lot of windows on the Mac, it can take up a great amount of CPU and RAM, especially for an app like PhotoShop. ![]() You can remove unnecessary items from the Apple menu > System Preferences > Users and Groups > Login items.ĥ. Too many startup items will make Mac take a long time to get going. Go to the App store to check whether there are available updates for apps installed.Ĥ. When you find certain apps launch slowly and make delayed responses, it may be a sign of incompatibility. To clean up the Mac, you can clear cache on Mac, delete unwanted files, uninstall apps, etc.ģ. A heavy-loaded Mac hardly delivers excellent performance. Free up space on Mac to run the newly installed macOS. If your Mac is too old to run the current macOS, then revert it to an older one.Ģ. Then, visit to check which models are supported by different versions of macOS. To know your Mac model and macOS information, just head to the Apple menu > About This Mac. Check whether your Mac is compatible with the installed macOS. All these fixes are geared to solve software-related issues that cause Mac to run slow.ġ. But you can try the fixes in this post to troubleshoot your Mac. It's hard to identify which is the exact reason that makes your Mac run slow. How to fix Mac is running slow after update? If you haven't updated your apps after you update the macOS, the incompatibility will also make your Mac slow. Outdated applications are running on your Mac.Upgrade from an older macOS requires more. macOS Ventura requires 12GB of available storage to upgrade from macOS Sierra or later. A little storage is available after updating.An incompatible macOS installed will slow down your Mac Update like macOS Monterey and macOS Ventura is not available on all Mac models. Your Mac model is too old and incompatible with the new macOS.
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