Hello guys , I need a new drive , 3TB or 4TB , but I have some problems, in my country external HDDs are much cheaper than internal HDDs , even the same model ,I am inclined to buy a external HDD , open it and use as internal. This is the drive: Seagate Expansion 4TB USB 3.0 3.5" Desktop External Hard Drive STBV4000100 But I have some questions about it , first I have a X58 motherboard , from what I read I can use a 2.2TB+ HDD as data drive (not boot) if I choose GPT partition (I am using 7 64Bits) , but this external HDD come with MBR partition , all I need is to reformat with GPT right? The other question is ,I found a video of opening a version of this 3TB HDD , anyone know if the 4TB is the same way?I cant post the video link but the title is: How to disassemble the Seagate Expansion Desktop Hard drive (3TB). 4TB external = $270 | 4TB internal = $400 , same model btw. if you guys have any more ideas you can give it too. Thanks!