I. Fully insert the 64 - 256GB microSD card to the DVR until a click sound is heard and connect the DVR to the PC. DO NOT INSERT THE MICROSD CARD INTO A CARD READER.
II. Windows: download and run the Zetta Widget to format it as FAT32. Quit all other programs including the anti-virus, firewall, browser and file manager. Otherwise, it will fail to start formatting. Disable the computer sleep mode. Do not touch anything at this moment and make sure the power supply and cable connection is stable.
III. Mac: please format it as "MS-DOS FAT", by: 1. Use spotlight to search for "disk utility". 2. There are 2 removable drives added. Choose the drive for the microSD card with capacity 59 / 63 / 128GB (it is GB). DO NOT CHOOSE THE DRIVE WITH 67M. 3. Choose Erase. 4. Choose "MS-DOS FAT" in the Format. 5. Press "Erase" at the lower right corner. 6. Then press "Erase" in the new pop up windows. 7. Wait for a while, it is done. Do not touch anything at this moment and make sure the power supply and cable connection is stable. If it is still not ok, please use the formatter from SD Association to format the card first.