3 TB external drive - USB connected displays 746GB

MyOpicVoid

Distinguished
May 19, 2008
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I've read 100's of posts about 3 TB drives not showing up correctly in Windows.

My situation is I have WD Green 3 TB drive that only shows up in windows 10 as 746GB when connected through the USB cable. The external drive is a Rosewill and it has 2 ports. eSATA and USB ( USB is 2.0 ). On my Inspiron 7720 - the drive shows up as 746GB connected via the USB port. On my Wife's HP ( WIN 10 ) connected via the eSATA cable - I was able to format the drive properly and can see 2.7TB ( Which I guess is standard?? You lose 300GB??) - so I guess my Rosewill can only read this drive as 746GB via the 2.0 USB port? Is there any changes that will allow the Rosewill USB connection see the whole 3 TB?

If it is the Rosewill - will a newer external 3.0 USB drive see the full # TB's?

I'm assuming it's the outdated interface on the Rosewill?

Thanks for looking and all replies are appreciated.
 
Solution
I agree that it is the rosewill not supporting the drive over 2TB. A capable external drive adapter (even using USB 2) will see the entire 2.7TB. Pretty much any newer dock should work fine.

Yes, 2.7TB is what you get. It is not space lost due to format but the difference between binary and base 10, and the fact that drive makers use a marketing approach in calling their drives 3TB. 1024^3 is a little over 7% different than 1000^3.

RealBeast

Titan
Moderator
I agree that it is the rosewill not supporting the drive over 2TB. A capable external drive adapter (even using USB 2) will see the entire 2.7TB. Pretty much any newer dock should work fine.

Yes, 2.7TB is what you get. It is not space lost due to format but the difference between binary and base 10, and the fact that drive makers use a marketing approach in calling their drives 3TB. 1024^3 is a little over 7% different than 1000^3.
 
Solution

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