New
#11
I suggest that you keep your connections S/ATA 0,1,2 etc.
Review your bios settings so that you are able configure boot priority.
Adding the additional drive after installing OS will entail additional work in that the drive will be recognised in bios but not by disk manager until its volumised and assigned a letter.
For further support please provide your system specs at the bottom left of your screen.
Thanks and good luck.