saadbashir

I have Mini NVR and everything seems to work fine except for the fact that I am unable to record anything. When I insert the external HDD and go to Settings and in HDD area it is not detecting any HDD. Similarly I tried attaching ESATA drive with an external enclosure and gave it power separately like i did with external USB HDD but that didn't work either. Am I doing something wrong? I would highly appreciate if someone could help me with this problem. Thanks