Windows 10: Disk full for no obvious reason

I have my hard drive seperated into two partitions: one for the OS and one for data. The space on the first one is completely full (about 99 out of 100 GB full). However, if I take all the folders and files/programs on the hardware and look at the properties of those and add all of those together, I get something around 20 GB. What could be the explanation for this, and what could I do to solve this problem?

submitted by /u/fschmitt
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:)

 

Disk management console view is not up-to-date

i dont know how to fix your disk management, but i can fix your partition problems...




open up Command Prompt with admin rights. (Right click, run as admin)


enter in
DISKPART
list disk

then find the Disk number for your Raid array... lets call it number 7 ( you can tell what disk is what by the total size)
type in

Select Disk 7
List Partition (will give you a list of all the partitions..)
Select Partition 1 (im assuming you only have 1 partition on Disk 7) repeat this step if you have more partitions.
ASSIGN


that should get the array up and running ready to use.


EDITED.

any problems, post back ^^


Still EDITING *Stick Out Tongue

side question, have you tried restarting the PC?

 

disk space reduced after media creation tool

Hi Sarah,

One of the possible reasons why your disk space was reduced is due to an unallocated disk space on your partitions. For us to isolate your concern, we suggest that you check your device's partition. To do this, follow the steps provided below:

• Type Computer Management on Ask me anything and press
  Enter.
• Select Storage and click on Disk Management.
• Send us a screenshot.

We look forward to your response.

 

diskpart doesn't show disk

Hey,

I am trying to install Win10 on a mac book air.

However the diskpart does not list the disk even after reformatting the partition as NTFS per suggestion.

read through this solution but cannot move to step 1 listed in the solution by Ivan as that disk doesn't see that partition it was just able to reformat.

Regards