SoM wrote:only have ntfs, refs
meerkt wrote:Did you try to first delete the existing partitions?
You can also GPTize from diskmgmt.msc: right-click on the physical disk ("Disk 0, Basic...").
EzioAs wrote:IIRC, this is the particular 3TB model which is known to die in less than 2 years (I had one too in the past). You're lucky to have it still working even now, but I really suggest you backup any important files to another different drive.