Hi, I recently want to install windows 8.1 on my HDD through a usb. But in the windows setup it asked me where to install the windows but i cant select the HDD as the format is not NTFS. So i try to run Diskpart through cmd in order to format the HDD to ntfs, but it is not listed there. The drive is listed in BIOS though. Does anyone can help me. Looking thorugh google but never find anything helpful for now.