1.    10 Aug 2015 #1
    Join Date : Aug 2015
    Posts : 2
    Win10, 64

    Disk partition not recgonized by Win 10

    I have a 3 TB disk partitioned into two parts. In Win 7 they had two different drive letters. Win 10 does not recognize the second partitioned portion of the disk and has labeled it unallocated. The disk manager provides no option to allocate the partition (most options are greyed out). Anyone have a solution or do I have to buy a third party disk management application?
      My ComputerSystem Spec
  2.    10 Aug 2015 #2
    Join Date : Jul 2015
    Posts : 354
    Widows 10/Linux
      My ComputerSystem Spec
  3.    10 Aug 2015 #3
    Join Date : Aug 2015
    Posts : 415
    10 pro 64 clean install

    If that above doesn't do it there also this one below

    Download Free AOMEI Partition Assistant Standard - Magic Partition Manager Freeware
      My ComputerSystem Spec
  4.    13 Aug 2015 #4
    Join Date : Aug 2015
    Posts : 2
    Win10, 64
    Thread Starter

    Disk partition not recognized by by Win 10

    I tried the recommended third party partition managers but they did not work. I pulled the HD out of the computer and put it in an HDD docking station attached to a Win7 computer. It seems like Win 10 wiped the partition clean and removed the drive letter. Win 7 had no trouble partitioning the 3TB disk into two parts (2048GB and 746.5GB). I cannot change this partitioning further more I can't use the 746.5GB section of the drive. More research needs to be done on this issue. The real problem is the 746.5GB partition had my music library. I can reconstruct it but not without a lot of work.

    After further investigation into using an HDD over 2TB I found the problem to be a GPT protection issue with the lost partition. I found a way to remove the GPT protection through the use of the "diskpart" command. I was able to reformat the disk using GPT partition instead of MBR which is only good up to two GB HDDs. I could not save the data on the lost partition but it should not happen again.
    Last edited by RPitts; 15 Aug 2015 at 21:18.
      My ComputerSystem Spec


Similar Threads
Thread Forum
Windows 10 keep hanging and using high disk usage, partition order?
So I've tried multiple different installations of windows 10 on my hp envy 17 (no slug of a machine, i5-12gb ram etc) Stretching back to the previews. I'm also running windows 7 on the laptop in a dual boot situation. The disk has a built in HP...
General Support
Solved Can I keep Win 8.1 on it's own partition?
Maybe I've missed something along the way and I am somewhat confused to the upgrade process. Maybe others have the same concern. I have a typical laptop system, Asus UX303La, that I recently purchased from the Microsoft Store. The laptop came with...
Windows Updates and Activation
Can i use the recimg from another partition?
Currently im locked out of my primary windows partition because it cant boot. I'm currently on another partition trying my best to recover it. i want to refresh my windows but i really dont want to reinstall over 400GB of desktop apps. so after...
Software and Apps
partition setup
How to fix a mismatched partition??? Conflict with GPT and MBR on /dev/sda.
General Support
Solved Can't format a partition in win 10 TP
hey there, can anybody please tell me why I can't format a normal data partition in Windows 10TP? It goes through the whole normal procedure and then gives me an error stating "Windows cannot complete the procedure". Even logged in as Administrator...
Installation and Upgrade
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd
All times are GMT -5. The time now is 17:59.
Find Us
Twitter Facebook Google+ Ten Forums iOS App Ten Forums Android App

Windows 10 Forums