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I tried to shrink my C: drive from 600GB down to 300GB and it worked fine initially. Then I booted into my other OS and shrunk its partition down as well. When I booted back into Windows Disk Management says it is still 600GB even though in the properties it says it is 300GB. I cannot shrink it again so I am effectively missing 300GB of hard drive space. Any ideas?

the other Operating system is OS X (Hackintosh). I shrunk Windows in Disk Management and OS X in Disk Utility. Here is my Disk Management screenshot.

disk management
Click for full size

At the top is says C?: is ~300Gb but in the box in the middle it says it is still ~600GB. Edit: also not sure why it says all of E: is free but that might just be an issue with the Windows drivers for reading OS X partitions

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  • My other OS? How did you 'shrink' (2x)? A disk management screen shot and/or a listing of partitions might help too.
    – Jan Doggen
    Apr 21, 2014 at 6:55
  • OS X (Hackintosh). I shrunk Windows in Disk Management and OS X in Disk Utility. Here is my Disk Management screenshot. At the top is says C?: is ~300Gb but in the box in the middle it says it is still ~600GB. Edit: also not sure why it says all of E: is free but that might just be an issue with the Windows drivers for reading OS X partitions
    – Sawyer Knoblich
    Apr 21, 2014 at 6:59
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    I wonder if this is a conflict of information from the GPT to the MBR which still exists on GPT disks? The picture is crasy, as it makes zero sence how the 2 different type of displaying of the data show different ammounts. There must be a clue in that.
    – Psycogeek
    Apr 21, 2014 at 7:33
  • That's why I'm so confused! Shrinking the C: drive worked fine at first, but as soon as I booted into OS X it said C: was back to 600GB. I don't know how OS X would change it though...
    – Sawyer Knoblich
    Apr 21, 2014 at 7:35
  • If you don't already have a backup, you should be making one of any data you have right now before you do anything else....
    – Zoredache
    Apr 21, 2014 at 8:00

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