How is 4TB MBR drive showing 4TB in Win7?

The user bought a 4TB external USB drive.  Disk manager shows it is MBR.  Windows explorer shows it as 4TB.  I thought this was impossible unless it was reformatted as a GPT drive--where it would only show a bit over 2TB.  

I hope someone can help me understand what is going on.  TIA
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Benjamin VoglarIT ProCommented:
It is imposible.

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.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
JohnBusiness Consultant (Owner)Commented:
Did the user partition into 2 partitions?  This would allow the user to see a total of 4 GB although not as one partition for MBR.
Dan CraciunIT ConsultantCommented:
For Seagate disks, if you have installed the DiscWizard drivers, you could create a second partition below the 2.2TB mark and enjoy the full 3-4TB of a disk with a MBR.

It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows 7

From novice to tech pro — start learning today.