Shrink Volume or Partition in Windows 10  

    Shrink Volume or Partition in Windows 10

    Shrink Volume or Partition in Windows 10

    How to Shrink a Volume or Partition in Windows 10
    Published by Category: Hardware & Drivers
    21 Aug 2020
    Designer Media Ltd



    How to Shrink a Volume or Partition in Windows 10


    In Windows, you can decrease the space used by primary partitions and logical drives by shrinking them into adjacent, contiguous unallocated space on the same disk. This unallocated space could then be used to create a new simple volume (partition) on the disk.

    This tutorial will show you different ways on how to shrink a volume or partition on a basic disk in Windows 10.

    You must be signed in as an administrator to shrink a volume or partition.


    How to Read Shrink Volume Log in Event Viewer in Windows 10



    Contents

    • Option One: Shrink Volume or Partition on Disk in Disk Management
    • Option Two: Shrink Volume or Partition on Disk in Command Prompt
    • Option Three: Shrink Volume or Partition on Disk in PowerShell
    • Option Four: Shrink Volume or Partition on Disk in Settings






    OPTION ONE

    Shrink Volume or Partition on Disk in Disk Management


    1 Open the Win+X menu, and click/tap on Disk Management (diskmgmt.msc).

    2 Right click or press and hold on the partition/volume (ex: "D") you want to shrink, and click/tap on Shrink Volume. (see screenshot below)

    If Shrink Volume is grayed out, then it is not supported for the partition/volume.

    Shrink Volume or Partition in Windows 10-shrink_volume_in_disk_management-1.jpg

    3 Type in how many MB you want to shrink the partition/volume by, and click/tap on Shrink. (see screenshot below)

    You can compare the given Size of available shrink and Total size after shrink to help determine the amount of space you want to shrink this partition/volume by.

    You can only shrink a partition/volume if it has enough free space.

    1024 MB = 1 Gb
    1024 GB = 1 TB

    Shrink Volume or Partition in Windows 10-shrink_volume_in_disk_management-2.png

    4 If successful, you can now create a New Simple Volume with the Unallocated space if you like. (see screenshot below)

    Shrink Volume or Partition in Windows 10-shrink_volume_in_disk_management-3.jpg






    OPTION TWO

    Shrink Volume or Partition on Disk in Command Prompt


    1 Open an elevated command prompt or command prompt at boot.

    2 Type the commands below one at a time into the command prompt, and press Enter after each command. Make note of the volume number (ex: "4") of the drive letter (ex: "D") you want to shrink. (see screenshot below)

    diskpart

    list volume

    Shrink Volume or Partition in Windows 10-shrink_volume_in_command_prompt-1.jpg

    3 Type the commands below one at a time into the command prompt, and press Enter after each command. Make note of the maximum number of reclaimable bytes (ex: "1427659" MB) that you can shrink by. (see screenshot below)

    select volume <number>

    shrink querymax

    Substitute <number> in the top command above with the actual volume number (ex: "4") you want to shrink from step 2 above.

    For example: select volume 4

    Shrink Volume or Partition in Windows 10-shrink_volume_in_command_prompt-2.jpg

    4 Type the command below you want to use into the command prompt, and press Enter. (see screenshot below)

    (To shrink by maximum size allowed)
    shrink

    OR

    (To shrink by specified size)
    shrink desired=<size in MB>

    Substitute <size in MB> in the command above with the actual size in MB (ex: "71680") you want to shrink the partition/volume (ex: "D") by. You will not be able to shrink the partition/volume more than the maximum number of reclaimable bytes given from step 3 above.

    1024 MB = 1 Gb
    1024 GB = 1 TB

    For example: shrink desired=71680

    Shrink Volume or Partition in Windows 10-shrink_volume_in_command_prompt-3.jpg

    5 When finished, you can close the elevated command prompt, or create a New Simple Volume with the unallocated space if you like.






    OPTION THREE

    Shrink Volume or Partition on Disk in PowerShell


    To see more usage options for the Resize-Partition command, see: Resize-Partition - Microsoft Docs


    1 Open an elevated PowerShell.

    2 Type the Get-Partition command into the elevated PowerShell, press Enter, and make note of the drive letter (ex: "D") of the partition/volume you want to shrink on a disk. (see screenshot below)

    Shrink Volume or Partition in Windows 10-shrink_volume_in_powershell-1.png

    3 Type the command below into the elevated PowerShell, and press Enter. Make note of the supported SizeMin (minimum size) and SizeMax (maximum size) in bytes to resize the partition/volume. (see screenshot below)

    Get-PartitionSupportedSize -DriveLetter <Drive Letter>

    Substitute <Drive Letter> in the command above with the actual drive letter (ex: "D") you want to resize from step 2 above.

    For example: Get-PartitionSupportedSize -DriveLetter D

    Shrink Volume or Partition in Windows 10-shrink_volume_in_powershell-2.png

    4 Type the command below you want to use into the elevated PowerShell, and press Enter. (see screenshot below)

    (To shrink by size in Bytes)
    Resize-Partition -DriveLetter "<Drive Letter>" -Size <Size>

    OR

    (To shrink by size in KB)
    Resize-Partition -DriveLetter "<Drive Letter>" -Size <Size>KB

    OR

    (To shrink by size in MB)
    Resize-Partition -DriveLetter "<Drive Letter>" -Size <Size>MB

    OR

    (To shrink by size in GB)
    Resize-Partition -DriveLetter "<Drive Letter>" -Size <Size>GB

    OR

    (To shrink by size in TB)
    Resize-Partition -DriveLetter "<Drive Letter>" -Size <Size>TB

    Substitute <Drive Letter> in the command above with the actual drive letter (ex: "D") you want to resize from step 2 above.

    Substitute <Size> in the command above with the actual size (ex: "1327" in GB) you want to resize the partition/volume (ex: "D") by. You will not be able to resize the partition/volume more than the supported SizeMin (minimum size) and SizeMax (maximum size) given from step 3 above.

    The left over space (SizeMax-resize) after resizing the partition/volume will be how much you shrink the partition/volume by for the unallocated space.

    1000 Bytes = 1 KB
    1024 KB = 1 MB
    1024 MB = 1 Gb
    1024 GB = 1 TB

    For example: Resize-Partition -DriveLetter "D" -Size 1327GB

    Shrink Volume or Partition in Windows 10-shrink_volume_in_powershell-3.png

    5 When finished, you can close the elevated PowerShell, or create a New Simple Volume with the unallocated space if you like.






    OPTION FOUR

    Shrink Volume or Partition on Disk in Settings


    This option is only available starting with Windows 10 build 20197.


    1 Open Settings, and click/tap on the System icon.

    2 Click/tap on Storage on the left side, and click/tap on the Manage Disks and Volumes link on the right side. (see screenshot below)

    Shrink Volume or Partition in Windows 10-settings_manage_disks_and_volumes-1.jpg

    3 Expand open the disk (ex: "Disk 2") that contains the volume or partition you want to shrink the size of. (see screenshot below)

    Shrink Volume or Partition in Windows 10-settings_manage_disks_and_volumes-2.png

    4 Click/tap on the volume or partition (ex: drive "F") you want to shrink the size of of, and click/tap on Properties. (see screenshot below)

    Shrink Volume or Partition in Windows 10-settings_manage_disks_and_volumes-3.png

    5 Click/tap on the Change size button under the Size section. (see screenshot below)

    Shrink Volume or Partition in Windows 10-change_size_of_volume_or_partition_in_settings-1.png

    6 Type in a New size in MB (ex: 512) you want for this volume or partition (ex: drive "F") that is lower than the Current size (ex: 1025 MB), and click/tap on OK. (see screenshot below)

    You must enter a New size in MB at least the same size as the Min size to as much as the Max size shown for this volume or partition (ex: drive "F").

    The New size (ex: 512 MB) you enter here will be deducted from the Current size (ex: 1025 MB).

    Shrink Volume or Partition in Windows 10-change_size_of_volume_or_partition_in_settings-2.png

    7 You can now create a New Simple Volume with the Unallocated space (ex: 513 MB) on the disk if you like. (see screenshot below)

    This unallocated space (ex: 513 MB) on the disk (ex: "Disk 2") includes the left over space after deducting the New size (ex: 512 MB) from the Current size (ex: 1025 MB).

    Shrink Volume or Partition in Windows 10-change_size_of_volume_or_partition_in_settings-3.png

    8 You can now close Settings if you like.


    That's it,
    Shawn



  1. Brink's Avatar
    Posts : 60,465
    64-bit Windows 11 Pro for Workstations
       #1

    Tutorial updated to add option 4 to shrink the size of a volume or partition in Settings.
      My Computers


 

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