DVR System: how to install and format the hard drive? Zosi Customer Service Center January 28, 2019 11:35 Updated Follow 1. how to install hard drive 2. hard disk format Related articles What kind of hard drive can be used with our DVR? How to upgrade DVR System? How to setup ZOSI VIEW PC Client? Motion Detection for DVR System How to connect Analog Camera system Comments 0 comments Please sign in to leave a comment.