
This backup will be suitable for migrating all of your applications, data, and settings to a fresh installation of macOS should that ever be required. A Standard Backup is a complete backup of all of your data, settings, and applications. In cases where Apple's APFS replicator simply can't get the job done, we recommend that you configure CCC to perform a Standard Backup. CCC's file copier is battle-tested - we've built years of experience into it to handle all sorts of challenging conditions with grace. In short, it's just not very tolerable of real-world conditions.
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If APFS replication fails repeatedlyĪpple's APFS replicator will fail if there are problems with your installation of macOS, filesystem corruption on the source, storage driver conflicts, problems with the hardware, or if there are any media read failures. Click the "Erase Volume Group" button if it is presented in the Erase Volume panel. Instead, select the destination volume in this step. † If you have other volumes or partitions on your destination disk that you do not want to lose, do not erase the whole disk. Choose the option to allow CCC to erase the destination. Click on the Destination selector again and choose Legacy Bootable Backup Assistant.Choose the freshly-erased volume as the destination. Back in CCC, click on the Destination selector box and choose Choose a different destination.If you see a volume named "ASRDataVolume_xxx", select that volume and click the - button in the toolbar to remove it.Select the parent device of your destination volume in Disk Utility's sidebar †.Unmount your destination volume – this redundant step is often necessary to avoid failures in step 7.Choose Show All Devices from the View menu.

Consider removing any potentially-conflicting hardware drivers.
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Rule out general hardware problems, and verify that your destination device is attached directly to a USB or Thunderbolt port on your Mac (avoid hubs).If your first backup attempt failed, try the following steps. CCC reported that the APFS replication failed CCC works to avoid as many of these ungraceful results as possible, but we have the following recommendations for the cases where Apple's APFS replicator flops. We have identified a workaround in a forthcoming update, however we still recommend that you proceed with a Standard Backup instead.Īpple's APFS replicator is typically fast and flawless, but it does not handle some conditions with grace (or at all). Apple Silicon Mac users & macOS 12.3: Apple's APFS replication utility will fail on Apple Silicon Macs running macOS 12.3.
