![]() ![]() Although it’s more difficult to clone or copy this volume group, it’s by no means impossible. VM, containing virtual memory caches, which is upwards of 20 KB depending on use.Ĭatalina changed that by dividing the startup volume into two, a Volume Group consisting of a read-only System volume, and a writable Data volume, which is mounted in /System/Volumes and accessed via firmlinks from the System volume.Recovery, the Recovery Volume, of around 500 MB,.Preboot, a small volume of around 40-50 MB,.the startup volume, by default on the internal disk named Macintosh HD, which forms the root of the boot file system,.Within the latter are a minimum of four APFS volumes: ![]() Until Catalina, the structure of bootable System disks was relatively simple.Ī standard APFS boot disk in High Sierra and Mojave consists of an EFI partition and the main APFS container. I first drew attention to some of these issues four months ago, and more recently Mike Bombich of Carbon Copy Cloner has reiterated how the M1 changes ways to recover from disaster. This article looks at one change which is challenging and worrying many users: you can’t rely on cloning an M1 internal disk from a copy, as a method of recovering from disaster. M1 Macs bring a great deal more than better performance, and in some ways will modify old habits. ![]()
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