Incorrect disk usage values displayed in Settings > System > Storage


  1. Posts : 4
    Windows 10
       #1

    Incorrect disk usage values displayed in Settings > System > Storage


    If I open Settings in Windows 10, then go to System > Storage, I get the following usage for C:
    161Gb used of 285Gb
    whereas File Explorer gives the more sensible 21Gb used of 145Gb, which is almost certainly the correct values, given that it is a 145Gb partition, and is a fresh install of Windows 10. The C: partition is on a 480Gb SSD drive.

    Here is a screenshot of disk management showing the correct values

    Incorrect disk usage values displayed in Settings > System > Storage-part.png

    And here is a screenshot of the Storage screen with the incorrect values

    Incorrect disk usage values displayed in Settings > System > Storage-storage.png

    Can anyone explain why this is?

    Thanks.
      My Computer


  2. Posts : 3,644
    Windows 11 Pro 64 Bit 21H2
       #2

    The C: drive partition is correctly identified as 145.70GB, however if you add up the rest of the partitions without drive letters (ie) 139.70GB + the hidden 350MB and 450MB partitions, you get 285GB not including the 160GB of Unallocated Space. Since the other partitions don't have drive letters, System/Storage is lumping those drives into the total capacity of C:.
      My Computer


  3. Posts : 4
    Windows 10
    Thread Starter
       #3

    I see. The figures do add up as you have specified, but I think it is confusing that it reports the capacity of the other partition as though it was part of C: The 139.70Gb partition is an EXT4 partition (my Ubuntu install). However, it is mounted in Windows using an EXT driver as drive E: but I guess that Windows is confused by this and assumes the drive is full and reports it as 100% used. Adding this with the used capacity of C: of around 22Gb would give the utilised figure of 161Gb. Thanks for your help.
      My Computer


  4. Posts : 3,644
    Windows 11 Pro 64 Bit 21H2
       #4

    Are you sure you are not confusing this 139.79GB partition with your secondary HDD that also does not have drive letters in Windows, so I am assuming this Disk 1 is Ubuntu? If the 139.79GB partition is E: in Windows, the drive letter is not showing in Disk Management, Try right clicking and assigning this partition with a drive letter.
      My Computer


  5. Posts : 4
    Windows 10
    Thread Starter
       #5

    Yes, I am sure. I have the root partition on this drive, which is an ssd drive. The other hdd drive contains data partitions. I don't know why it's not showing up in disk management, but it is showing up in file explorer correctly, with the 1.4 Tb data partition on the hdd mounted as D:. The 8Gb partition on the hdd is just a Linux swap partition. I'll post an image of File Explorer later tonight to demonstrate this.
      My Computer


  6. Posts : 4
    Windows 10
    Thread Starter
       #6

    Image of File Explorer as promised. I cannot assign drive letters to these partitions in Disk Management. I guess the conclusion to be drawn is that Disk Management does not recognise non-Windows partitions, Storage gets confused by it, and File Explorer has no problem at all. In any case, at least I know now not to trust what is displayed at face value. Not sure if this is a bug or a "feature" and whether I should report it.

    Incorrect disk usage values displayed in Settings > System > Storage-fe.png
      My Computer


  7. Posts : 9
    Windows 10
       #7
      My Computer


  8. Posts : 889
    W10-2009 19042.1348
       #8

    You do realise that post was over 4 years old?
      My Computer


  9. Posts : 9
    Windows 10
       #9

    mngerhold said:
    You do realise that post was over 4 years old?
    Yeah! That's exactly what I mean.
    And then up-to-date ver.2004 now proved it outstanding over the years.....

    I do update that post, but not here.
    Last edited by Bokutaku; 03 Oct 2020 at 12:05. Reason: for clarification
      My Computer


 

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