Windows 8 and 8.1 Forums


Disk Management only allowing 20GB partition out of 946GB

  1. #1


    Posts : 11
    Win8.1

    Disk Management only allowing 20GB partition out of 946GB


    Perhaps someone here can help me troubleshoot this problem? I did a brief search for this same issue but i could not find anything matching on these forums.

    Ive long been an XP user, just purchased a new desktop with 8.1 and a 2TB HDD this week.

    I was partitioning some drives to organize things, and i am stuck.
    On a 2TB drive, i have so far allocated 900GB over 4 drives for files, etc. [100,200,300,300]

    I have 946.42GB left on my C, and i was hoping to get at least 2-3 more 200/300GB drives before leaving the remainder to C, but when i attempt to shrink my C drive, Disk Management tells me ive only got 20835MB/20GB available space to shrink. Wtf? I have literally added nothing to the computer except uTorrent, ive used Disk Optimizer to defrag the C drive 3 times, and still all of this space is unavailable? The OS has unmovable files scattered that loosely??

    Surely i am doing something wrong... anyone have any ideas??

    Thanks so much in advance!

      My System SpecsSystem Spec

  2. #2


    Posts : 1,720
    Windows 8.1 Pro


    Hey vilecomfort:
    Can you post a screenshot of Disk Management?
      My System SpecsSystem Spec

  3. #3


    Posts : 11
    Win8.1


    Here it is...

    Click image for larger version
      My System SpecsSystem Spec

  4. #4


    Posts : 1,720
    Windows 8.1 Pro


    I've got some theories on this but I don't want to toss them out there and have you runnin around in circles.
    Maybe get your hands on a reputable disk inspection software to look deeper into whats using up space and where.
    There is a wealth of knowledgeable folks here who may jump in on this, be patient and check back often.
      My System SpecsSystem Spec

  5. #5


    Posts : 11
    Win8.1


    Actually, i should mention something that may help someone to explain this...
    When i first started the partitioning process, i created 2-3 or so drives at roughly 1-300GB capacities like i mentioned above, only after i had created them and processed the drive as the "simple volume" or whatever... i realized i was just using for 200GB, 200000MB.. and being partially OCD, i saw that the drives were actually 196.whatever GB. So i deleted the drives using the "delete volume" process... restarted my pc a few times, and started over to the point i am at now.

    Is it possible that i created a partition HD volume, deleted it, but the space that volume took up is still being reserved? I would think the defrag would assist with that?

    I am hoping this issue is entirely my operator mis-use, rather than hardware or software issues...
      My System SpecsSystem Spec

  6. #6


    Posts : 11
    Win8.1


    I downloaded Hard Drive Inspector Professional and everything seems to be ok to my eyes...
    Click image for larger version
      My System SpecsSystem Spec

  7. #7


    Posts : 1,121
    Windows 8.1 x64


    Well, I don't really see why your situation is occurring either. The only thing I could even guess would be the way you are adding partitions, but it might just be something in Disk Management is stuck and contains some wrong information.

    Do you have media to recover your system if needed?

    All I can suggest is what I would do if I encountered your situation. First I would delete the partitions you created. Then shut the system down and do a cold boot.

    After that, check the drive again to see if Disk Management will allow shrinking the partition any further. If it will not, I would think about extending it a small amount and see how that goes, then check the shrink again.

    If it helps, I would then shrink the drive all at once, not in pieces. Then add the partitions starting from the left in the unallocated space.

    Disk Management does have a Rescan option in the menu, you could try that.

    If you use Explorer to look at the C: partition's properties, under the tools and optimize button, my partition shows as being Optimized automatically and done weekly. Perhaps the third party software you are using to defrag is causing conflicts.
      My System SpecsSystem Spec

  8. #8


    Posts : 1,720
    Windows 8.1 Pro


    @ vilecomfort:

    I've gotta agree with Saltgrass, I think you have to start over.
    First thing that weirds me out is that Recovery Image at the end of the Disk; I'd be tempted to export that to a thumb drive, but thats another can of worms.
    I'm not positive, but I'm thinkin that you started chopping the disk by 100, 200 and 300GB portions and worked your way backwards which could have opened a huge realm of variables including creating an over sized paging file, perhaps numerous shadow copies, etc. but in your case I'm not sure.
    I think you should delete all those partitions, extend the C: back to full then start chopping from left to right, meaning, pre-determine how much space you think you would ever need on C:, shrink it that much then work your way to the right.

    Question:
    Why all the partitions? In doing so you're making Windows place extra process "calls" when moving files around.
    Why not just make one encrypted drive, for example, then just create libraries or folders for the rest?
    Just wondering.

    Some tips here:
    Overview of Disk Management

    Hope you git 'er done!!!
      My System SpecsSystem Spec

  9. #9


    Posts : 11
    Win8.1


    Quote Originally Posted by Saltgrass View Post
    Do you have media to recover your system if needed?

    All I can suggest is what I would do if I encountered your situation. First I would delete the partitions you created. Then shut the system down and do a cold boot.

    If it helps, I would then shrink the drive all at once, not in pieces. Then add the partitions starting from the left in the unallocated space.

    Disk Management does have a Rescan option in the menu, you could try that.

    If you use Explorer to look at the C: partition's properties, under the tools and optimize button, my partition shows as being Optimized automatically and done weekly. Perhaps the third party software you are using to defrag is causing conflicts.
    Ill try the above. I dont have any physical media, just whatever is on this PC. The "defrag" is just windows disk optimizer.
      My System SpecsSystem Spec

  10. #10


    Posts : 11
    Win8.1


    Quote Originally Posted by Edwin View Post
    @ vilecomfort:

    I'm not positive, but I'm thinkin that you started chopping the disk by 100, 200 and 300GB portions and worked your way backwards which could have opened a huge realm of variables including creating an over sized paging file, perhaps numerous shadow copies, etc. but in your case I'm not sure.
    I think you should delete all those partitions, extend the C: back to full then start chopping from left to right, meaning, pre-determine how much space you think you would ever need on C:, shrink it that much then work your way to the right.

    Question:
    Why all the partitions? In doing so you're making Windows place extra process "calls" when moving files around.
    Why not just make one encrypted drive, for example, then just create libraries or folders for the rest?
    Just wondering.
    Thats exactly what i did... took 300 off the C, then another 200, etc. Ill calculate how much i need and start left to right like you mentioned.

    I had always been told to partition drives when they are that large, for efficiency, safety, etc. I dont NEED all those seperate drives, i could care less if i only have a 100GB C drive, and the rest split into 2 diff. drives, but i was of the understanding that partitioned drives help the HD work less and speeds it up a bit?

    I dont need any encryption on my home pc, its only me that uses it... would that be done for a specific reason other than privacy?
      My System SpecsSystem Spec

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Disk Management only allowing 20GB partition out of 946GB
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