How to hide your drives:
Step1: windows key +r
Step2: Type CMD Press Enter
Step3: Type DISKPART Press Enter
Step4: Type LIST VOLUME Press Enter
Step5: If you want Hide the Drive D Select the volume no of that drive
Step6: Type SELECT VOLUME (X) it shows volume 8 is the selected volume
Step7: Type REMOVE LETTER D Press Enter then the drive will be hidden
Step8: In order to assign it back Type ASSIGN LETTER D the drive will be back