3 TB Dirive using USB 3.0 shows up as 500GB

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cpsbiz

Honorable
Nov 30, 2013
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Help, Got a 3 TB drive from Ebay and connected it to to my USB 3.0 port. It is recognized by Win 7/64bit as a 465 GB drive. How do I get the 3TB drive back?
 
Solution
popatim
If it wasn't a brand new sealed box drive, how sure are you that you haven't been scammed?

Someone could easily take out the 3tb drive and stick in a 500gb... which formats down to exactly 465gb.
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RealBeast

RealBeast

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Sep 13, 2010
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It needs to be initialized as a GPT drive and then formatted on capable hardware. Is it in a USB caddy or is it a USB external drive?

I would use diskpart to clean it and then initialize in disk management as GPT.

 
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C

cpsbiz

Honorable
Nov 30, 2013
7
0
10,510


Thank you for responding. Yes this is a USB Drive. I have used disk part and it now shows up as a gpt drive with capacity of 465 GB.

Where is the 3.0 TB capacity, do i format the drive? what sector size?
 
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RealBeast

RealBeast

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Sep 13, 2010
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What is the model of your computer or if self built the motherboard model?

And for the diskpart commands, did you do these:
diskpart
list disk
select disk n (where n is the USB drive)
clean

and then go into disk management, select the unallocated USB drive and initialize in GPT using the wizard and then format the full size available?
 
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cpsbiz

Honorable
Nov 30, 2013
7
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10,510


Thanks for your help as well.
The model number on the case (lable is STBV3000100) and the case appers untamperd with.
 
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cpsbiz

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Nov 30, 2013
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Sorry, I built this for my company. It uses an Asus P6T6 workstation bord with I7 Quad CPU
 
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C

cpsbiz

Honorable
Nov 30, 2013
7
0
10,510


yes, it is a USB card. 3.0 is not on the MBD. MFG is StarTech, PEXUSB3S22, chip is Renesas Electronics USB 3.0 Host Controller
 
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C

cpsbiz

Honorable
Nov 30, 2013
7
0
10,510
HI ALL,

POPATIM WAS RIGHT. I OPENED THE CASE AND THE DRIVE IS A 500 GB WD DRIVE. SO SORRY FOR BOTHERING YOU ALL WITH THIS ISSUE.

THANKS FOR ALL OF YOUR HELP AND I WILL NOTIFY EBAY

dICK
 
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popatim

popatim

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Dec 2, 2009
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The Case is snap together and pretty easy to take apart once you know where the tabs are. Try downloading and running seatools to get the model # of the drive inside. Most sizing issues with the 3tb usb drives result in it showing 746gb (which is the remainder after subtracting the 2.2tb mbr max size) and why I think maybe you are a victim here :-(

edit - you may need to plug it into a usb2 port for seatools to see it.
 
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Saga Lout

Saga Lout

Retired Mod
Mar 31, 2010
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There's no need to be sorry for bothering us, cpsbiz - this is really useful information. I'd like you to post the seller's e-Bay ID so I can look at his other items to see if he is selling 3Tb internal drives. Nice little business he has there and it's time he was put out of it.
 
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