Windows 10: Windows 10 only sees 746gb on 3tb drive

Good Day everyone,

This is driving me crazy. I have an old,but new to me HP PC. I decided to buy a 3TB

:)

 

Max disk size for Windows 10

I know this doesn't answer your question about Windows 10, because I do not know.

However, the problem you're running into with your Windows 7 machine, and the 2TB limit, and the "wasted" 1TB on your 3TB drive.

I had this problem when I cloned a 2TB drive to a 3TB drive, and found 2TB (2047.9GB actual) in use, and 1TB wasted (746.52 GB actual) .

My HD was Seagate and the solution was Seagate's Disc Wizard. Information about this can be found at: Support for Disk Drives Beyond 2.2 TeraBytes (TB) and 4K Advanced Format Sectors | Seagate Support

With a youtube video at:

The Disc Wizard didn't allow me to have a 3TB partition, but did allow my computer to access the 746GB as another drive letter.

If you have another manufacturer for your hard drive, perhaps they have a similar hard drive manager.

 

Windows 10 deleted partition - What I found out

I tired to update from Windows 10 build 10586 to Windows 10 build 14393 a few weeks ago and my HDD(a 3TB HDD) got wiped. Windows10 wiped the partition. Investigating what happened I found out the 2TB of a 3TB HDD was gone. I have not been able to find the
2TB partition or recovery any file. The 3TB HDD only showed a 100MB recovery drive and 786GB of unallocated space because the HDD started out as a Windows 7 HDD. Using Mini Tool Partition Wizard I discovered 7 boot partitions 3MB in size, a 250 GB partition,
and a 100 MB partition, all which were not visible using Drive Management under Windows 10. I attached this 3TB HDD using an enclosure to another Windows 10 computer. Basically Windows 10 turned this 3TB HDD to a 746GB HDD. The 2TB partition is not recoverable.
So Windows 10 cost my not only the software I lost but 2TB of HDD space. Now I have to add that I have a Laptop and another computer that started out as Windows 7 that I have very little or no problem with Windows 10 or the updates but neither of these computer
contain alot of additional software like the one Windows 10 killed the HDD on. I turned the unallocated drive to a logical drive and assigned it a letter and then it showed 273 GB of used space. I then looked a this partition using the Mini Tool software and
it showed files, so I turned the logical drive into a primary where I was able to check the files in windows explorer. My point is I was able to recover files. This is what happened to me.