diskutil

list

# list disks
diskutil list

info

# info about a physical disk
diskutil info "/dev/diskX"

• The Disk / Partition UUID information shown for physical partitions (apfs, ext4, btrfs, etc) is the PARTUUID (not UUID). For synthesized partition it is the UUID

/dev/disk4 (external, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *2.0 TB     disk4
   1:           Linux Filesystem                         1.6 TB     disk4s1
   2:                 Apple_APFS Container disk5         391.0 GB   disk4s2

/dev/disk5 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +391.0 GB   disk5
                                 Physical Store disk4s2
   1:                APFS Volume chan                    367.2 GB   disk5s1
   2:                APFS Volume music                   970.8 KB   disk5s2

# Get PARTUUID of the btrfs partition
diskutil info disk4s1

# Get PARTUUID of the apfs partition
diskutil info disk4s2

# Get UUID of the apfs partition
diskutil info disk5

# Get UUID of the apfs volume (virtual)
diskutil info disk5s1
diskutil info disk5s2

mount

• Mount a partition/volume into /Volumes
• The volume must be decrypted already (otherwise use diskutil apfs)

diskutil mount "diskX"

unmount

# unmount partition
diskutil unmount "diskX"

mountDisk

• Mount all volumes of a disk/partition

diskutil mountDisk "/dev/diskX"

unmountDisk

• Unmount all volumes of a disk/partition

diskutil unmountDisk "/dev/diskX"

eject

diskutil eject "/dev/diskX"

listFilesystems

diskutil listFilesystems

eraseDisk

• Erase a whole disk (not a partition)
• Automatically adds a EFI partition in a GPT partition scheme

diskutil eraseDisk free free /dev/diskN

eraseVolume

• Erases a disk and format it with a new filesystem
• Uses the command newfs_* under the hood (e.g., newfs_apfs)
• List the formattable file systems with diskutil listFilesystems

# APFS
diskutil eraseVolume "APFS" "Untitled" "diskXsY"

# Unallocated space
diskutil eraseVolume free free disk0s5

addPartition

diskutil addPartition diskN  "ExFAT" "MyVol" "10g"

resizeVolume

# Expand it to use all the free space ahead
diskutil resizeVolume disk0s0 0

apfs

list*

diskutil apfs list

deleteVolume

diskutil apfs deleteVolume disk0s0

deleteVolumeGroup

diskutil apfs deleteVolumeGroup <UUID>

deleteContainer

• Completely remove an APFS container making it free space

diskutil apfs deleteContainer disk0s0

resizeContainer

• Expand a partition to use the resulting free space

diskutil apfs resizeContainer disk0s0 0

unlockVolume

• Unlock and mount a volume
• It searches for all passwords for all cryptographic users

diskutil apfs unlockVolume disk1s1

listCryptoUsers | listUsers | listCryptoKeys | listKeys

• List keys/users associated with a given volume

diskutil apfs listCryptoUsers disk1s1

listSnapshots

• List snapshots associated with a volume
• A snapshot reference may also be used (3-part BSD identifier, e.g., disk1s2s1)

diskutil apfs listSnapshots disk1s1
diskutil apfs listSnapshots disk1s4s1

listVolumeGroups

• List volume groups in a given container
• Usually encapsulates System + Data

diskutil apfs listVolumeGroups disk1