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Thread: How to get 4TB interal hard drive to appear as 1 partition?

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    How to get 4TB interal hard drive to appear as 1 partition?

    I have Windows 7 64-bit. I bought a Hitachi Touro 4TB USB 3.0 hard drive because it was cheaper to buy that and remove the hard drive from the enclosure than it was to buy an internal drive.

    It's appearing in Disk Management with 3 partitions of 465 GB, 1582 GB and 1678 GB. I was under the impression that Windows 7 could handle 1 partition of 4TB.

    How can I have 1 partition?
    Last edited by holygamer; 25-01-2013 at 04:44 PM.

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    Re: How to get 4TB interal hard drive to appear as 1 partition?

    The only way to do it is by partitioning it with a GPT/GUID partition table. The traditional MBR partitioning does not support volumes that large.

    The big gotcha.....you can only boot from a GPT partitioned disk with Windows installed in EFI mode.
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    Re: How to get 4TB interal hard drive to appear as 1 partition?

    Is this because of using SATA?

    Reason i ask is because i am using the same drive but i have it hooked up in it's Enclosure via USB3 but it is showing as one 4Tb Partition (3.63Tb)

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    Re: How to get 4TB interal hard drive to appear as 1 partition?

    No, it's just a question of MBR vs. GPT

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    Re: How to get 4TB interal hard drive to appear as 1 partition?

    Basically you are going to need to format the 4TB drive and then assign it one partition to cover its capacity.

    GPT is a must. Use the Disk Management Tool type - diskmgmt.msc in the run command to access it.

    You may have to delete the three sub-partitions and then create a new one to accomplish this so make sure you have not data on it.

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    Re: How to get 4TB interal hard drive to appear as 1 partition?

    Thanks. It's working now.

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    Re: How to get 4TB interal hard drive to appear as 1 partition?

    Nice to know that it is working now! Can you please share the steps that you follow to partition as I am unable to do this? Thanks in advance for your time.
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    Re: How to get 4TB interal hard drive to appear as 1 partition?

    In the Disk Management software that's a part of Windows, delete all the partitions for your USB hard drive then Right-click on the "Disk 1" box and select Convert to MBR disk. Then create a new volume.

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    Re: How to get 4TB interal hard drive to appear as 1 partition?

    Quote Originally Posted by holygamer View Post
    In the Disk Management software that's a part of Windows, delete all the partitions for your USB hard drive then Right-click on the "Disk 1" box and select Convert to MBR disk. Then create a new volume.
    Convert to GPT
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    Re: How to get 4TB interal hard drive to appear as 1 partition?

    What are you talking about? The step I mentioned was what I did to get all the partitions to appear as 1 partition.

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    Re: How to get 4TB interal hard drive to appear as 1 partition?

    If the drive has 512 byte sectors, the maximum size of a partition under MBR is 2^32 *512 bytes which is roughly 2.2TB. To use a drive like that requires a GPT. However, if the drive has a sector size of 4096 bytes, the maximum size of an MBR partition is 2^32 * 4096 bytes, which is roughly 16TB. The limiting factor is the 32 bit LBA address space.
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    Re: How to get 4TB interal hard drive to appear as 1 partition?

    So I was right in saying to use MBT after all. I didn't understand why the other guy said to use GPT when the other guy obviously had a 4TB hard drive.

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