unallocated partition

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  1. Posts : 580
    W10
       #1

    unallocated partition


    Not often I look in disk management, but now I see that I have an unallocated partition on my SSD.
    I am certain that in the past there was not such a thing.
    My question is what might be a possible reason that such a partition develops?
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  2. Posts : 2,078
    Windows 10 Pro
       #2

    Can you post a screen shot of your disk management window.
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  3. Posts : 580
    W10
    Thread Starter
       #3

    unallocated partition-screenshot.jpg
    Plankton said:
    Can you post a screen shot of your disk management window.
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  4. Posts : 2,078
    Windows 10 Pro
       #4

    The whole window please.
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  5. Posts : 17,447
    Windows 11 Pro
       #5

    It looks like it used to be a manufacturer's recovery partition at one time. It could also have been left unallocated for overprovisioning and when you did a Windows upgrade, the upgrade process stuck a new recovery partition at the end of the drive. I would delete the first recovery partition, then expand C: drive into the resulting consolidated free space, then if needed fix the Windows recovery environment with the reagentc /setreimage command.
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  6. Posts : 74
    Win 10 Home
       #6

    NavyLCDR said:
    then expand C: drive into the resulting consolidated free space,
    Is there a tutorial on how to do this?
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  7. Posts : 56,182
    Multi-boot Windows 10/11 - RTM, RP, Beta, and Insider
       #7

    miata54 said:
    Is there a tutorial on how to do this?
    @miata54

    Real easy. Once you have the unallocated space available, right click the partition you want to expand, and click Extend Volume. Choose all available space it says you can. Apply.

    unallocated partition-2017-10-31_16h16_05.png
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  8. Posts : 74
    Win 10 Home
       #8

    Easy indeed.

    Thanks
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  9. Posts : 56,182
    Multi-boot Windows 10/11 - RTM, RP, Beta, and Insider
       #9

    miata54 said:
    Easy indeed.

    Thanks
    You're welcome. Not sure there is a formal tutorial for that. Probably is. TF has a tutorial for everything under the sun! Written by very sharp people.
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  10. Posts : 17,447
    Windows 11 Pro
       #10

    miata54 said:
    Is there a tutorial on how to do this?
    I recommend for less experienced users to use MiniTool Partition Wizard Free:
    MiniTool Free Partition Manager for Window 8/7/vista/xp | Partition Wizard Free Edition

    The reason is that it will let you delete, move and expand partitions in ways that Windows either won't do, or will complain about doing. You would right click on the recovery partition to the right of your C: drive partition and delete it. Then resize the C: drive partition to fill all the empty space that gets created next to it. Don't forget to click apply in Partition Manager.

    After that, restart the computer. Then open a Command Prompt (admin) or Powershell (Admin) and run the command:
    reagentc /info

    that will tell us if you need to reset your Advanced Recovery options menu. Even if we can't reset it, there is very little that you lose, everything on that menu (you get that menu holding down shift when you click on restart on the power button icon) can also be found by booting from a Windows 10 installation USB flash drive or DVD.
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