Question Laptop SSD won't show up in BIOS but i shows up as a Drive

[Draxarys]

Laptop model is : Lenovo legion y520 15IKBN
SSD Model: Adata xpg sx6000 pro m2 256 gb

I can use it as a drive, i can even copy the windows to it using a partition program but it doesn't show up in BIOS.

 

[rgd1101]

What drive do you have for boot now? what os?

 

[Draxarys]

HDD the laptop came with originally and windows 10 which also laptop came with.