diskutil ap convert disk0s2 ; diskutil list
Started APFS operation on disk0s2 Macintosh HD
Converting HFS Volume to an APFS Container which will export one APFS Volume
The target is the Journaled HFS+ volume "Macintosh HD" backed by the GPT partition disk0s2
The target is a data disk; it is not a macOS system disk
Found APFS EFI driver /usr/standalone/i386/apfs.efi to install into the APFS Container
The target is not encrypted
Unmounting disk0s2
Starting conversion from HFS to APFS
Performing apfs_hfs_convert -x --verbose=0x400 --efi /usr/standalone/i386/apfs.efi /dev/disk0s2
Reporting pre-conversion statistics
Reporting post-conversion statistics
Successfully finished conversion from HFS to APFS
Successful conversion in commit mode so will switch type to APFS
Setting type of disk0s2 to APFS
Changing the physical disk partition type in shared mode
Partition modification attempt count was 1
Opening and closing disk0s2 to terminate old content driver
Expecting the new APFS Container at Physical Store disk0s2
Confirmed existence of new unencrypted APFS Volume disk3s1
Mounting APFS Volume disk3s1
APFS Volume mount attempt result was 0
Exiting conversion operations with error code 0
Disk from APFS operation: disk3s1
Finished APFS operation on disk0s2 Macintosh HD
/dev/disk0 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *500.1 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_APFS Container disk3 499.8 GB disk0s2
/dev/disk1 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *1.0 TB disk1
1: EFI EFI 209.7 MB disk1s1
2: Apple_HFS Clone 999.9 GB disk1s2
/dev/disk2 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme +9.8 GB disk2
1: EFI EFI 209.7 MB disk2s1
2: Apple_HFS InstallESD 9.4 GB disk2s2
/dev/disk3 (synthesized):
#: TYPE NAME SIZE IDENTIFIER
0: APFS Container Scheme - +499.8 GB disk3
Physical Store disk0s2
1: APFS Volume Macintosh HD 4.7 GB disk3s1