Question Recovery text on old boot drive

[DarthBailey]

so my friend installed a new motherboard and M.2 drive in his computer and a new installation of windows 10 on it. He still has his old boot drive in the computer, but when he goes to access the files there he only sees "Recovery" text doc. But the drive is still like 90% full. He really needs to recover his files

 

[lvt]

What is the old boot disk? HDD or SSD?