Warning: Partition X does not end on cylinder boundary. Should I care/how to fix?
Solution 1:
They tell you exactly what they say. No, you shouldn't care about that. Your cylinders are complete fictions and no actual operating system, not even MS-DOS, has actually itself cared about such alignment. This is a pointless message from fdisk, which is over three years behind other disc partitioning utilities and showing no signs of improving. Get yourself an up-to-date partitioning tool that doesn't have this silliness, and that does 4KiB alignment or similar, such as gdisk.