Hold down Command+R when rebooting to reboot your mac in Recovery Mode.Click on the Time Machine icon in menu bar, choose Back up Now.Run Time Machine and set it up for backup.Connect an external hard drive for backup to your mac.But here Time Machine backup is recommended. There are 2 ways to back up file, either back up your files to an external hard drive with Time Machine or upload your data to cloud-based service for storing, like iCloud, DropBox, OneDrive. If you don’t want to render your data under any potential risks, you are highly recommended to back up files. It is safe to upgrade or downgrade a macOS version, there is no harm done to your files or data, but data loss after mac update or reversion happens sometimes. Also, make sure your mac is connected to the internet for later macOS installer download. You should quit running programs and leave enough space (15GB to 20GB) to install Catalina after erasing Big Sur from your Mac hard drive. Before the downgrade, your data matters the most, so don’t forget to back them up though it takes time to finish a backup. To downgrade Big Sur to Catalina without losing data, here are 6 steps to follow.
DOWNGRADE MAC OS TIME MACHINE HOW TO
How to Downgrade Big Sur to Catalina without Losing Data? No matter what your reason is to revert to an older version, you can refer to following part to downgrade from Big Sur to Catalina without losing data.
DOWNGRADE MAC OS TIME MACHINE FOR MAC
Improved transparency for Mac App Store downloadsĪll the revealed new updates added to macOS11 Big Sur stimulate mac users to upgrade and take the first bite on this macOS version.Redesigned Maps for better and easier navigation.Updated Messages app (better control of conversation).
MacOS 11 Big Sur is absolutely the biggest update these years since it has moved from 10 to 11, you can find a bunch of update as following in Big Sur: Support file recovery on 200+ formats: video, audio, photo, docs, etc.įree Download Why We Need to Downgrade Big Sur to Catalina?.Recover files from internal and external hard drive (USB, SD Card, Media Player).5 recovery modes: Basic, Advanced, Formatted Drive, Trash, Extenal Devices.Recover files lost due to macOS update, downgrade, crash, etc.