You need to be careful, the boot files are currently on the HDD. Since the SSD shows as an Active partition, you may have some there also, but removing the HDD would let you know. Setting the SSD as the primary boot device may also help. If it stops booting, reattach the HDD and set it as primary boot device.
But to be clear, according to your attachment, you are using the HDD to boot and the SSD for your OS.