atapi.sys relates to your harddrive software driver, you don't say how large your harddrive is, but it's obviously partitioned and maybe on the large size. Try here and see if this is any help. click here
What is ransomware and how do I protect my PC from WannaCry?
Disney layout supervisor Rob Dressel on the challenges of visualising Moana
Siri vs Google Assistant
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.