Windows 10: Different displayed disk sizes when data held is identical on both disks

Discus and support Different displayed disk sizes when data held is identical on both disks in Windows 10 Network and Sharing to solve the problem; Hi, I have W10 Pro, Version 1803. OS build 17134.648 installed. I have two identical 2TB hard drives connected as simple drives through an Areca... Discussion in 'Windows 10 Network and Sharing' started by Ian_Ott, Mar 15, 2019.

  1. Ian_Ott Win User

    Different displayed disk sizes when data held is identical on both disks


    Hi,

    I have W10 Pro, Version 1803. OS build 17134.648 installed.

    I have two identical 2TB hard drives connected as simple drives through an Areca ARC-1212 Raid pcie card.

    They hold identical data.

    To check that, I looked at the folder properties on each drive, and that showed identical numbers of files and identical sizes for each folder

    To ensure that, I created MD5 hashes for each file on each drive. The results were identical.


    However, under "This PC", using the Properties / General display

    one drive shows the Used Space as 1,192,530,808,832 bytes

    the other drive shows the Used Space as 1,194,528,247,808 bytes


    Both have the identical capacity in bytes.

    Both have the same allocation size for a data block.

    Any suggestions?


    a) I am curious

    b) I want to migrate the data to a pair of larger drives, and this all started by making sure that the same data was on both.

    CHeers, Ian

    :)
     
    Ian_Ott, Mar 15, 2019
    #1

  2. 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 Different displayed disk sizes when data held is identical on both disks :p

    side question, have you tried restarting the PC?
     
    slyfox2151, Mar 15, 2019
    #2
  3. What should I have as backup-a RECOVERY disk or a REPAIR disk? Are these the same or different?

    Got the free upgrade to Windows 10 and I need to start making some kind of a Repair/Recovery disk.

    Are these the same thing? Are they different?

    Can someone list the steps needed to make this/ these disk (s)?

    Thank you.

    Barbara
     
    BarbaraLarnce, Mar 15, 2019
    #3
  4. Different displayed disk sizes when data held is identical on both disks

    Foreign Disk

    Hi,

    You will only lose the data in the Foreign Disk once you convert it to a "Basic Disk" in Disk Management.

    To allow the disk to be recognized, follow the steps below:

    • Press Windows key and type "Disk Management" and click on it.
    • Right-click on the foreign disk and select "Import Foreign Disks..."


    Feel free to post back with more information.
     
    Israel Arn, Mar 15, 2019
    #4
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Different displayed disk sizes when data held is identical on both disks

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