How to merge an HFS+ partition into my APFS partition I want to merge an empty HFS+ partition with my Mac's APFS partition. My Disk Utility interface looks like this :  



How can I do this ?
Choose the internal drive (Apple HDD...)
Hit "Partition" in the top row
Choose the freeMacPartition slice of the pie
Hit the --button and then the Apply-button


The freeMacPartition has to be located downstream of (or "after") the APFS container in the partition table or merging won't work.