I have a SSD as a primary boot drive and a second HDD in the optical drive bay, somehow the primary SSD is showing disk2 while my second HDD shows disk1. Don´t know why it did it this way? Anyway, does the order of the disk matter, does it make any difference at all that my primary drive is showing disk 2? If that matters then is there any way of changing the order without formatting? And if formatting needs to be done how do i manually specify which disk number a disk shall get? Macbook pro 2011 with High Sierra, APFS on the primary SSD drive (disk2) and ExFAT on the second drive (disk1).