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  1.    03 Jul 2017 #1
    Join Date : Aug 2016
    Posts : 82
    Windows 7-pro-sp1 and windows 10-pro-1703

    Strange storage arithmetic by Microsoft


    Setting>Storage shows that ThisPC is C:
    That's not correct, since This Pc contains two Windows, Linux Mint and a data partition.
    I don't expect windows to see Linux partitions.
    But no matter how I look at it, I cannot make any sense out of the display in Settings
    Attached Thumbnails Attached Thumbnails StrangeStorage.jpg   TrueStorage.jpg  
      My ComputerSystem Spec
  2.    03 Jul 2017 #2
    Join Date : May 2015
    Central IL
    Posts : 4,221
    Mac OS Sierra

    This is an old argument. It has been stated over and over, that the space calculated by Windows is correct. You have to go into Drive Management to see the actual size of the partition, not from explorer.

    As for looking at the Ext4 partition, you can download third party utilities or use Gparted in Linux to see them.
      My ComputerSystem Spec
  3.    04 Jul 2017 #3
    Join Date : Aug 2016
    Posts : 82
    Windows 7-pro-sp1 and windows 10-pro-1703
    Thread Starter

    "old" - oh, yes, I failed to search first. Sorry.
    Windows explorer numbers match diskmgmt.msc numbers.
    Storage view listed as ThisPC (C: ) under Settings makes no sense to me.
      My ComputerSystem Spec
  4.    04 Jul 2017 #4
    Join Date : Aug 2014
    Forever West
    Posts : 3,922
    Win10 Home and Pro, Win10 Insider Preview, Win7 Home, Linux Mint

    Quote Originally Posted by 91fw View Post
    "old" - oh, yes, I failed to search first. Sorry.
    Windows explorer numbers match diskmgmt.msc numbers.
    Storage view listed as ThisPC (C: ) under Settings makes no sense to me.
    Your Storage isn't much different from mine, on my only internal 1TB HDD C: is my Windows/boot/system partition and D: partition is for additional Data and programs. And then I have an ODD and 3 USB HDDs. Are your C:, E: and M: partitions on a drive or separate drives?
    Click image for larger version. 

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      My ComputerSystem Spec
  5.    04 Jul 2017 #5
    Join Date : Aug 2016
    Posts : 82
    Windows 7-pro-sp1 and windows 10-pro-1703
    Thread Starter

    Yes, it is all on one drive. DiskMgmt display(3 partitions to the right of M: belong to Linux.):
    Attached Thumbnails Attached Thumbnails Partitions.png  
      My ComputerSystem Spec
  6.    04 Jul 2017 #6
    Join Date : Aug 2014
    Forever West
    Posts : 3,922
    Win10 Home and Pro, Win10 Insider Preview, Win7 Home, Linux Mint

    Your 3 lettered partitions plus the 4 unlettered partitions plus the unallocated space total about 465.77GB suggesting the drive is marked by the manufacturer as 500GB. There is some 'loss' of capacity as drives get partitioned and formatted, quite normal. The Storage view doesn't take into account unlettered partitions or unallocated space, probably won't even see any sections using unsupported formats.
    Unallocated = unpartitioned, unformatted
      My ComputerSystem Spec
  7.    04 Jul 2017 #7
    Join Date : Aug 2016
    Posts : 82
    Windows 7-pro-sp1 and windows 10-pro-1703
    Thread Starter

    I have no problem with 465GB. Yes, it is a 500GB drive.
    Screen shots in my first post show Storage reports 87GB used out of 139GB. How is that possible on 78GB windows 10 partition? I did google today and found nothing similar.
    Berton, can you post what explorer shows like I did in the second screenie in the first post. Just to compare notes.
      My ComputerSystem Spec
  8.    04 Jul 2017 #8
    Join Date : Aug 2014
    Forever West
    Posts : 3,922
    Win10 Home and Pro, Win10 Insider Preview, Win7 Home, Linux Mint

    Sure, in about an hour when I'm back on my Win10 computer [using my MacBook Pro running macOS Sierra now].
      My ComputerSystem Spec
  9.    04 Jul 2017 #9
    Join Date : May 2015
    Central IL
    Posts : 4,221
    Mac OS Sierra

    As the calculator proves, this is the exact amount for 500gb: 465.6613 USB Hard Disk Real Capacity Calculator -- EndMemo A lot of that has to do with reserved space for any bad blocks or sectors. Also it holds a copy of the MBR and other partition info in a reserved space, as it moves data when sectors start to go bad, it will move that data into reserved areas as it tries to rearrange data to make sure that blocks of common files like the Pagefile, stay in one large area.

    You can use one of the Tree Viewers to show you how data is laid out and to see what is eating up space. If you have Hibernate enabled, turn it off in Command with Powercfg /hibernate off The page file if too large, can also eat up precious space, same as downloaded files that Windows holds in a reserved folder and temp files.

    Always clear out old installs, temp files, etc, before getting a real count of drive space available.
      My ComputerSystem Spec
  10.    04 Jul 2017 #10
    Join Date : Aug 2014
    Forever West
    Posts : 3,922
    Win10 Home and Pro, Win10 Insider Preview, Win7 Home, Linux Mint

    As promised, same screenshots as you have:
    Click image for larger version. 

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    Click image for larger version. 

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ID:	142509
      My ComputerSystem Spec

 
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