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I got a 3TB ST3000DM001 Hard. I formatted it using USB interface (SATA to USB3), then I copied my files to it.

Now, when I install the hard into my case using regular motherboard SATA connector it showed "Unallocated". I tried the USB interface again and it showed my files and everything as expected.

How can I fix this?

Note: When I formatted using the USB interface I used "Minitool Partition", and made 1 Logical partition 2794.52GB since I'll use it for storage.

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  • You might not be able to. What motherboard do you have ? (Some older systems can't handle drives > 2TB due to geometry issues for a start)
    – davidgo
    Commented Oct 15, 2016 at 9:37
  • I am aware of this fact but I thought that related to boot and installing systems which isn't what I am using the drive for. I have Gigabyte GA-880GA-UD3H
    – user2132188
    Commented Oct 15, 2016 at 9:41
  • The enclosure most likely emulates 4Kn sectors. You need to decide where to use to the disk and keep it there.
    – Daniel B
    Commented Oct 15, 2016 at 9:44
  • @DanielB - I know it would be risky, but what is the chance that testdisk could be used to realign/fix things ?
    – davidgo
    Commented Oct 15, 2016 at 9:45
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    @davidgo No chance at all. It would have to recreate the filesystem from scratch to refer to the appropriate on-disk locations (which are now addressed in 512 B blocks, instead of 4 K blocks). While theoretically possible, it would require absolute knowledge of the NTFS filesystem.
    – Daniel B
    Commented Oct 15, 2016 at 9:47

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