I'm at my wit's end with this, and I can't find anything about it in documentation or questions, so I thought I'd ask one.
I had an APFS Fusion Drive that included two drives: (120+500) GB. I cloned (dd) the 500 GB drive to another 1 TB drive and exchanged it. All good so far, except the 1 TB drive acts as a 500 GB, as expected.
I boot into recovery mode and after getting the proper disk identifier of the APFS Container Scheme (disk2, in this case) and unlocking the volume, I tried:
-bash-3.2# diskutil apfs resizeContainer disk2 0
It seemed to work, saying that it was "Growing APFS Physical Store...", but Disk Utility was still only showing the 500 GB, so I later decided to try 'gpt'. I first removed the partition (2) from the physical disk (disk0), and then re-added it in place with the size expanded to fill the drive (1952915488):
-bash-3.2# gpt remove -i 2 disk0 disk0s2 removed -bash-3.2# gpt add -b 409640 -i 2 -s 1952915488 -t 7C3457EF-0000-11AA-AA11-00306543ECAC disk0
This seems to have resized the partition size properly, but the size of the APFS Container Scheme and Volume remain at the original ~620 GB, even though the Physical Store references seem to be correct (disk0s2, disk1s2):
-bash-3.2# diskutil list /dev/disk0 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *1.0 TB disk1 1: EFI EFI 209.7 MB disk1s1 2: Apple_APFS Container disk2 1000.0 GB disk1s2 /dev/disk1 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *120.0 GB disk0 1: EFI EFI 209.7 MB disk0s1 2: Apple_APFS Container disk2 119.8 GB disk0s2 /dev/disk2 (synthesized): #: TYPE NAME SIZE IDENTIFIER 0: APFS Container Scheme - +619.7 GB disk2 Physical Stores disk0s2, disk1s2 1: APFS Volume Macintosh HD 529.7 GB disk2s1 2: APFS Volume Preboot 23.4 MB disk2s2 3: APFS Volume Recovery 514.0 MB disk2s3 4: APFS Volume VM 4.3 GB disk2s4 -bash-3.2# gpt show disk0 start size index contents 0 1 PMBR 1 1 Pri GPT header 2 32 Pri GPT table 34 6 40 409600 1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B 409640 1952415488 2 GPT part - 7C3457EF-0000-11AA-AA11-00306543ECAC 1952825128 700007 1953525135 32 Sec GPT table 1953525167 1 Sec GPT header -bash-3.2# gpt show disk1 start size index contents 0 1 PMBR 1 1 Pri GPT header 2 32 Pri GPT table 34 6 40 409600 1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B 409640 234031968 2 GPT part - 7C3457EF-0000-11AA-AA11-00306543ECAC 234441608 7 234441615 32 Sec GPT table 234441647 1 Sec GPT header
I've tried resizeContainer on disk2 again after seeing that the size didn't change to 1.12 TB, but I get the following, which makes sense since disk1s2 is already resized:
Error: -69743: The new size must be different than the existing size
Disk Utility, however, recognizes the Fusion Drive as 1.12 TB, but the Container and Volume are still limited to 620 GB, and trying to partition the volume shows that there is a giant usable 1.12 TB partition:
So I must've not understood something or done something wrong, but I appreciate any help in getting to use that stubborn extra space on the drive!