![]() If there are no entries on the destination, proceed to step 4. Select all entries that may exist on the destination within the ‘Saved Application State’ folder.If there is no such folder on the destination, proceed to step 5. Navigate to ‘/Users//Library/Saved Application State’ in the Analyze Panel.Go through the following steps in your task document for each user account on your system to prevent the destination from restoring the running application state when you boot into it. Also, if/when you boot your destination, you should avoid leaving any applications running when you shut it down. Lastly, in some instances, it can cause stability problems. Second, it could result in unwanted behavior such as Mail staring up and downloading new messages. First, it adds significantly to the startup time. It is preferable not to have applications startup in your last running state on the destination. This is also found in the contextual menu (right-click).Īfter running the mirrored backup, the temporary user on the destination will be wiped out and replaced by the legitimate user(s) on your source volume. Use ‘Actions->Exclude’ to exclude the selected item or items. ![]() Find the following file and ‘Exclude’ it: ‘System/Library/CoreServices/CoreTypes.bundle’.Choose ‘Mirror left-to-right’ as the ‘Operation.’.Select your attached device’s system volume as the destination.In the ‘Destination Target,’ select ‘Connect To: Mounted Volumes (Admin Access).’.Select your booted system volume as the source.In the ‘Setup’ panel, under ‘Source Target,’ select ‘Connect To: Mounted Volumes (Admin Access).’.On the ChronoSync Organizer window, click ‘Create a new synchronizer task.’.On your main Big Sur Mac, open ChronoSync.Use some temporary name/credentials such as ‘tempuser’. The macOS installer will walk you through the process of creating an initial user account. If you are unfamiliar with selecting an alternate destination volume for macOS Installation, review this article as it explains the process with screen shots: Install Big Sur on a backup device and configure it with a temporary user (fully configuring the user isn’t necessary).Erasing an existing device will also temporarily lose your redundant system for the amount of time it takes to complete this procedure. While you can perform the following steps with an existing bootable backup, you will lose the ability to revert to the previous version of macOS, if needed. Keep in mind it is preferable to use a new, blank device to create your first Big Sur bootable backup. Hopefully in the near future, we can rely on Apple’s APFS replication utility (ASR) to clone the Big Sur System volume more easily. The steps to take to make bootable backups on Big Sur are a bit cumbersome now. This makes it impossible for ChronoSync to create a bootable Big Sur System volume since it cannot cryptographically sign the filesystem. SSV features a kernel mechanism that verifies the integrity of the system content at runtime, and rejects any data - code and non-code - that doesn’t have a valid cryptographic signature from Apple (source: ). Now, macOS Big Sur adds strong cryptographic protections to store system content on a signed system volume (SSV). ChronoSync v4.9.5 was released to handle this new file system organization.īut with a major release from macOS 10.15 to macOS 11.0, one would expect major changes. The two volumes are linked together in macOS to appear as one volume to the user. The Data volume contains everything else, including your home folders. The System volume is read-only and contains all the operating system files that should never change during use of the computer. Apple breaks up your files into two volumes: System and Data. ![]() With the advent of macOS Catalina, Apple introduced the concept of APFS volume groups. ![]()
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