How to install an image to TM-800 including any hard disk

How to install an image to TM-800 including any hard disk ,

1-After Downloading any image do factory reset off/on from rear for 30 seconds.
2-After setting up all functions off/on from rear for 30 seconds.
3-To install hard disk it has to be formatted NTFS otherwise TM-800 will not detect it.
4-After installation and formatting the hard disk by using hotkey { HDD } on your remote { will take up to 15 mints } off/on from rear for 30 seconds