Technical requirementsUnderstanding the macOS filesystem and storage Understanding general conceptsWhat is formatting?Differences between disks, partitions, and volumesDisks and drivesPartitionsVolumesmacOS partition maps (schemes)Understanding the macOS filesystemWhat is a filesystem?macOS volume formatsThe advantages of APFSSpace sharingEncryptionDefragmentationAdditional filesystems supported by macOSFile system domains in macOSManaging disks, volumes, and partitionsExamining storageAbout This MacDisk UtilitySystem InformationManaging partitionsExamining and modifying partitionsFormatting/partitioning a disk/volumeAdding a non-APFS partitionErasing/reformatting disksResizing/deleting a non-APFS partitionUsing APFS volumesConverting volumes to APFSAdding a volume to an APFS containerDeleting/erasing an APFS volumeMounting, unmounting, and ejecting disks/volumesUnmounting and ejectingMountingOptimizing storage spaceStore in iCloudOptimize StorageEmpty Trash AutomaticallyReduce ClutterSummaryFurther reading