After previously upgrading to High Sierra and converting my boot drive to APFS, I recently migrated to a new (larger) SSD boot drive. While setting that up, Disk Utility gave me an error when restoring from my old volume to the new one "
APFS inverter failed to invert the volume - invalid argument".
I ended up using Carbon Copy Cloner to transfer the files which went OK, and I am now running from the new volume.
However I have a file at the root of the drive called
ContainerToInvert. It is over 250GB in size, so I'd like to delete it if it isn't needed.
Can anyone confirm that deleting it won't cause any problems?