Since the directory named 47A8A135-5137-3651-90DB-5CE5C5D185C9 matches the volume UUID of the ‘Snapper’ volume, this directory should not be deleted. The command ls /Volumes/Preboot/ produces the following directories (folders). Volume UUID: 47A8A135-5137-3651-90DB-5CE5C5D185C9Įntering the command diskutil mount disk1s2 produces the following output.
#WHAT IS DISK UTILITY USED FOR ON MAC MAC#
Wait a few seconds before pressing the keys, to give your Mac more time to recognize the keyboard as it starts up. Then press and hold the keys as your Mac starts up. Then press the power button to turn on your Mac. The the volume UUID for this volume can be determined by entering the command diskutil info disk1s1 | grep "Volume UUID". Be sure to press and hold all keys in the combination together, not one at a time. The ‘Snapper’ volume contains macOS Mojave. dev/disk1 (synthesized):Ġ: APFS Container Scheme - +451.5 GB disk1 The files stored in the hidden ‘Preboot’ and ‘Recovery’ volumes, that are associated with deleted volume, may remain.įor example, when entering the command diskutil list on my Mac, I get the following output regarding an APFS container. This occurs when a volume containing macOS stored in the APFS container is deleted. While grg's answer is correct, I would like to point out that both the ‘Preboot’ and ‘Recovery’ volumes may contain files that are no longer needed.
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