[SOLVED] Mojave 10.14.4 doesn't recognize my second HDD with HFS+

[troorl]

I have two drives in my laptop: one with my current system, and the other one with a bootable backup and a partition for different files.

The old system was 10.12.x on HFS+, and it stayed like that on my backup drive. But the newly updated one is now APFS, and it doesn't recognize the second drive, even though it's perfectly healthy and I can boot from it to the old system. Disk Utility doesn't see any partitions on it and says that it's "Uninitialized". I checked, I still have HFSPlus.efi on my EFI partition, and I also have an HFS+ partition on my system drive and it's recognized.

Did anyone have this issue? What can it possibly be?

 

Here are two diskutil list listings, first from my backup (see disk1) and the second one from the new system (see disk2).

➜  ~ diskutil list
/dev/disk0 (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         80.2 GB    disk0s2
   3:                  Apple_HFS Temp                    39.5 GB    disk0s3

/dev/disk1 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *320.1 GB   disk1
   1:                  Apple_HFS MacBackup               73.8 GB    disk1s1
   2:                        EFI EFI                     209.7 MB   disk1s2
   3:                  Apple_HFS VIDEO                   245.9 GB   disk1s3

/dev/disk2 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +80.2 GB    disk2
                                 Physical Store disk0s2
   1:                APFS Volume Mac                     37.6 GB    disk2s1
   2:                APFS Volume Preboot                 45.1 MB    disk2s2
   3:                APFS Volume Recovery                519.8 MB   disk2s3
   4:                APFS Volume VM                      20.5 KB    disk2s4

diskutil list
/dev/disk0 (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 disk1         80.2 GB    disk0s2
   3:                  Apple_HFS Temp                    39.5 GB    disk0s3

/dev/disk1 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +80.2 GB    disk1
                                 Physical Store disk0s2
   1:                APFS Volume Mac                     38.0 GB    disk1s1
   2:                APFS Volume Preboot                 45.1 MB    disk1s2
   3:                APFS Volume Recovery                519.8 MB   disk1s3
   4:                APFS Volume VM                      20.5 KB    disk1s4

/dev/disk2 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                                                   *320.1 GB   disk2

 

[Jake Lo]

Is the second drive in a caddy?

try adding this kext

AppleAHCIPort.kext.zip

[troorl]

Thank you, it works now! Yes, it's in a caddy. 

What's weird is that I don't remember such problem after updating to 10.14.2 a few months ago.