Hi, guys i just changed a wd 6 tb purple hdd from hikvison [16 channel] to hi-focus cctv Dvr [24 channel] which already has 1tb wd 10purz in it ,upon installing the 6tb and booting the dvr,it reported “invalid disk found do you wish to format it” and i formatted it,after checking the disk space i found it reports only 3.5Tb out of 5.5 tb and 935Gb of 978Gb[which is correct] and so i formatted again,it still shows only 3.5tb and every time i reboot the Dvr,it keeps saying invalid disk found and asks me to format it and shows me 0b free.am not sure if drive is malfunctioning or the dvr is not supporting a 6tb Size? what could be the problem guys ?the drive has warranty till 2021.can i connect it to my desktop and format it through any partitioning software like acronis and put it back in dvr, so it can recognise? am not looking for any backup data or anything just want to upgrade 24 channel dvr with at least 60 day playback,Thank you.