I'm trying to recover deleted partitions from my hard drive, its a Toshiba 3TB and I never ever try to delete any partition on purpose. The Hard Drive was in an enclosure Toshiba Canvio Desk 3TB External HDD so, I want to make it internal because of the USB 3.0 issues of disappearing/disconnecting randomly when i do like photoshop or doing Sony Vegas editing. So im not taking anymore chances of loosing data after I work so hard to make videos for youtube. Ok I got the HDD off the Toshiba 3TB Ext HDD, plugged it in to one of my SATA 3, boot up my computer, and guest what the hard drive needed to be formatted, I don't want to do that!!! ok the main problem is why is this happening this hard drive and not the other ones, I actually done this to my Seagate 2TB and worked fine! didn't have to convert file system or any sort of backup! Is there a solution for this problem, I'm currently trying AOMEI Partition Assistant to recover Partition. After fast scan, does it suppose to have picked up the 2.73TB not 3TB I know the capacity of the 3TB what shows on computer. So I'm going to try the "Full Scan" recovery see if it will pick up the lost partition. If you guys can suggest a fast and best solution because I really don't want to loose any files and data.