Recently I installed Ubuntu on my MacBook Pro (Mid 2012) on a second volume. I wanted to change to the Ubuntu Volume through Startup Manager and used this tutorial to do so: Installing Ubuntu on Mac with macOS and Windows already installed
All in all I messed around with EFI but it worked. Yesterday I uninstalled Ubuntu and after doing that I could not access my macOS Bootable Volume (with High Sierra)! In Disk Util the Type was set to (FFFF.FFFF,...) which I changed to the correct code for APFS, but it still wouldn’t boot or show in Startup manager.
Anyway I used the Ubuntu partition to reinstall OSX High Sierra which of course did not help accessing my original Volume.
I was able to access my data with third Party data recovery software but I need to make this Volume bootable again. In Diskutil it says that the Volume is Uninitialized (Volume is APFS Format.) Is there anything I can do? If you need more info please ask!
Thats my current diskutil list output:
/dev/disk0 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *256.1 GB disk0 1: EFI EFI 209.7 MB disk0s1 2: Apple_APFS Container disk1 190.8 GB disk0s2 3: Apple_HFS Untitled 3.9 GB disk0s3 4: Linux Filesystem 500.2 MB disk0s4 5: Apple_APFS Container disk2 41.4 GB disk0s5 /dev/disk1 (synthesized): #: TYPE NAME SIZE IDENTIFIER 0: APFS Container Scheme - +ERROR disk1 Physical Store disk0s2 /dev/disk2 (synthesized): #: TYPE NAME SIZE IDENTIFIER 0: APFS Container Scheme - +41.4 GB disk2 Physical Store disk0s5 1: APFS Volume disk0s5 15.2 GB disk2s1 2: APFS Volume Preboot 21.2 MB disk2s2 3: APFS Volume Recovery 516.1 MB disk2s3 4: APFS Volume VM 1.1 GB disk2s4