Hi. I have a big problem and I hope someone at anandtech will be able to help me (maybe even write an article about it). I have 6 hard drives from 200gb up to 1tb and I wanted to consolidate all my data on 1 4tb hard drive. I have an old PC, nf4-sli motherboard (amd) and I have a new sony laptop. I bought a seagate 4tb 3.5in hard drive. I have an external usb dock: http://aluratek.com/esata-usb-2-0-sata-hard-drive-docking-enclosure When I used the usb dock and the sony laptop (via usb) to create a partition on the hard drive, It showed less than 3.6tb (something like 768gb). So I used my old PC (got the nf4 controller and a silicon image 3114 in it) to partition and format the hard drive. I read on anandtech that we need to format the partition as GPT, not MBR if we want to have one partition that will cover the whole drive. I did it and it worked (did low format and it took 30 hours!) Then, I plugged the newly formatted hard drive in the usb dock and now, it saw 3.6tb of free space. I than started moving the data of the other hard drive (with another usb dock) to this new drive. Remember that it is not a bootable drive and that I have 1 partition for the whole drive. When I got to 1.4tb of free space left, something weird started to happen. Windows (8) told me to restart to fix a corruption in my hard drive. Also, some folder were no longer accessible (problem IO access). I did a restart and then windows asked me if I want to format the hard drive ! I have 95% of all my data on that drive and now I cannot even see the folders ! After some reading, I understood that my external usb dock might not support a partition bigger than 3tb, even if it display more than that ! I taught that formatting the hard drive on another PC fixed that problem. What happen (what I believe) is that the usb dock wrap around the space on my hard drive and started writting data at the beginning, overwriting the partition table and the first files put on the drive. For now, I would really like to: - fix the problem and get back to filling the drive, even if I have to do it on my old PC - at least get the untouched files on the hard drive. I did not overwrite more than 3gb, so I have near 3tb of data that should be salvagable. How can I get it ? which application is the best ? I tried partition guru pro 4.3 and it can see some files, if I ask it to recover the files. But I will need another hard drive big enough to get all the data (or reput the data on the old hard drives) Please, does anybody had that problem and know the solution ? Also, how can I be sure that it won't happen again, especially on my old PC (silicon image controller). For now, the priority it salvaging the data (over 20 years of photos, videos, cv, games, passwords, etc ...) I will try to recover the partition if partition guru (at least find it) but I think it won't find anything, because I only had 1 partition and it was at the beginning (and might have been overridden). Also, is there a usb dock that support hard drive has big as 4tb so I can use it on my laptop to access my 4tb hard drive when I will have fixed my problem ?