HIya, I purchased a 4TB USB3 external drive a few years back and mainly use it for backup of video and music. Recently I could not get it to bring up the drive in File Manager. The drive would spin up and USB connection beeped but nothing would show up... thinking the enclosure is bad so i pulled it out of the enclosure and plugged it into another machine using a hd dock with USB3 connection. Still did not show up in File Explorer so I checked Disk Management and found it is stuck in a GPT Protected Partition and no real way to get the data out since I can't convert it back to MBR because it is over 2TB. So I guess I will have to take the lost and kill the partition. But for future reference, should I try to partition a 4TB partition with GPT or split it up with 2 MBR partition instead? I remember having this issue a while back when I tried to take one drive from one machine and plug it to another machine and it is stuck in GPT protected. Instead of using external HD for backup... I think I'm going to build a file server and load it up with HDs and use it to store my backup files. Thanks for any advise.