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Disk management does not show correct harddrive size

Last response: in Storage
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January 9, 2013 11:53:48 PM

I have an MSI motherboard, model MS-7309 running Windows 7 Ultimate SP1. Motherboard has the latest BIOS update v2.70. I added a SATA 3T harddrive (WL3000GS A6472c) to the second SATA port, the first drive is a 1T ST310005 20AS and works fine. BIOS sees the second drive as a 3T harddrive but when I boot into Windows and go to Disk Management it only sees it as a 746.38GB drive. How can I get Windows 7 to see the full drive?
January 10, 2013 1:04:28 PM

Also tried using EaselUS Partition Master 9.2.1 Home Edition, that shows it as a 746.39GB drive. Seems to me EaselUS is just pulling the same info that Windows is supplying.
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January 10, 2013 2:52:20 PM

You'll have to use Seagate DiscWizard or format it as gpt in disk management. If you use gpt you won't be able to use it for a boot drive with your old motherboard. But for data it should be fine. Oh I just noticed your 1tb is the seagate. What manufacturer is the other one?
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January 10, 2013 5:02:11 PM

It's a MediaMax WL3000GS A6472C
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January 10, 2013 9:41:42 PM

Couldn't find that model on google. Is it an external drive?
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January 12, 2013 8:21:58 AM

Using "Sisoftware Sandra" it reports the manufacturer as Western Digital, so it's a "white label" drive.
Using Western Digital's - Western Digital Data LifeGuard Diagnostics, it show the drive as a 3000gb drive........
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January 12, 2013 12:18:46 PM

Try deleting all partitions on the 3tb drive and re-initializing it as a gpt disk.
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January 12, 2013 7:10:47 PM

That's just not right! I'd take it back.
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January 12, 2013 7:16:49 PM

Kinda seems like an Windows failure.........Sisoftware Sandra sees it at the correct size and Western Digital Lifeguard sees it at the correct size....but Windows 7 does not
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January 12, 2013 7:19:02 PM

Have you checked for latest chipset/ide/sata drivers on the motherboard site?
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January 22, 2013 10:40:11 PM

Noting that two different pieces of software I tried saw the added harddrive's correct size but windows did not lead me to believe that the Microsoft windows SATA driver was at fault. I searched and located a replacement driver that removed the Microsoft driver and put itself in its place. I then used Westerdigital's - "Western Digital Data LifeGuard Diagnostics", tested and zeroed the harddrive, then went to "Computer/Manage/Disk Management" where it now read the proper harddrive storage capacity. Set it at GPT, initialized and formatted...... Capacity: 3,000,457,288,288bytes ......Problem solved...

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January 23, 2013 1:02:21 PM

Way to go!
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!