Go to disk management in control panel. This will show you all your disks and partitions. Then go to your drive 0, go to the second partition, right click, and delete volume. Then go to the first half of disk 0, and then right click. Clock on extend volume. Then just enter the full drive size, should be default. Click enter. This will have made both partitions into just the one. Then go to disk 1 and redo. You will then have your 256gb ssd, and 1tb hhd. Instead of 128gb ssd 128gb ssd 512gb hhd and 512hhd.
Don't know why they do this, but its really an easy fix.