3TB WD Hard Drive Partition Issue

Discussion in 'PC Hardware' started by TinyZz, Jul 10, 2014.

  1. TinyZz

    TinyZz MDL Novice

    Jul 9, 2014
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    Hi guys,
    I learned this the hard way. I went and bought a NAS and few 3TB WD Green hard drives. After testing them I realized green hard drives often go into sleep mode when idle, so i went and bought real NAS drives instead.

    I've tried to use the green hard drives on Windows 7, but Win7 only see 750GB and the other 2TB was missing.

    I tried GParted and Fdisk on it, but in the Disk Management still shows 750GB. However, when I put them back into the NAS I can see 3TB.

    Any ideas what I should do next?

    ---
    TinyZz
     
  2. Tito

    Tito Super Mod / Adviser
    Staff Member

    Nov 30, 2009
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    You need to partition the HDD in GPT style & install Windows in UEFI mode.
     
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  3. murphy78

    murphy78 MDL DISM Enthusiast

    Nov 18, 2012
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    #3 murphy78, Jul 10, 2014
    Last edited by a moderator: Apr 20, 2017
    admin prompt
    Code:
    diskpart
    list disk
    select disk 1 (or whatever matches the disk(s) of your description)
    clean
    convert gpt
    create partition primary
    format fs=ntfs quick label="some label here"
    assign
    exit
     
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  4. Flipp3r

    Flipp3r MDL Expert

    Feb 11, 2009
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    Yes use Murphy's diskpart commands on your disks.
    If you are using these 3TB as Data drives then your Windows does NOT need to be in UEFI mode - Only if your installing your OS...
     
  5. plavec

    plavec MDL Novice

    Aug 20, 2012
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    So if I understand correctly - when the UEFI mode is not enabled, the only limitation of 3TB disks is that it cannot be a system disk?
     
  6. Mr.X

    Mr.X MDL Guru

    Jul 14, 2013
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    #6 Mr.X, Jul 15, 2014
    Last edited: Jul 15, 2014
    No. It can still be a system disk but due is MBR formatted then only 2TB are seen, the rest disk capacity remains unseen.

    The 2-TB barrier is the result of this 32-bit limitation. Because the maximum number that can be represented by using 32-bits is 4,294,967,295, this translates to 2.199 TB of capacity by using 512-byte sectors (approximately 2.2 TB). Therefore, a capacity beyond 2.2 TB is not addressable by using the MBR partitioning scheme.