Hello,
First of all my pc is Predator helios 300 G3-572 : 16Gb ram , gtx1060 ,i7 7700HQ ( i dont think this will help

)
So i just added a new NVME M.2 samsung evo 500 gb and i have a problem in my partition .
Basically i did all the cloning from hdd to ssd , and now is the SSD the one who boots but the only problem is that i have my 500 gb splitted into 2
(C:) apparently contains windows and other stuff with 250gb space and the other is (D:) 250gb was apparently created because i have splitted my HDD before into two disks .
And my HDD still contains its files as before and splitted in 2 disks as before too ( 250gb and 750gb ) .
So what should i do to have a whole 500gb SSD that has the OS ?
This is what i thought about as a solution : delete all of the files in the second disk (D:) since the files exist in the HDD and somehow add those 250gb to (C:)
but the thing is , i dont know how !
Thanks in advance