Windows 10: Cannot change unallocated space into partition with drive letter

Discus and support Cannot change unallocated space into partition with drive letter in Windows 10 Support to solve the problem; I want to create a new partition inside Windows 21H1 for a new Macrium backup until I can later get a large enough USB stick (in addition: I want both... Discussion in 'Windows 10 Support' started by Airider, Jun 13, 2021.

  1. Airider Win User

    Cannot change unallocated space into partition with drive letter


    I want to create a new partition inside Windows 21H1 for a new Macrium backup until I can later get a large enough USB stick (in addition: I want both internal and external storage). I did take some unallocated space from C:/ -- cannot have storage destination in C.\ or any other disks being backed up! -- which is more than large enough for this but the only choice Windows offers is the Simple Volume Wizard which does not allow me.

    :)
     
    Airider, Jun 13, 2021
    #1

  2. Unallocated Space to C Drive

    Thanks
     
    realtravisbrown92, Jun 13, 2021
    #2
  3. Ruz San Win User
    Unallocated Space to C Drive

    Hi Travis,

    It appears that a disk partition was created but was never assigned its allocation. Assuming there are no files stored in the unallocated partition, perform these steps to combine it with your C: drive:

    • In Disk Management, right-click on (CCannot change unallocated space into partition with drive letter :) which appears next to the
      Unallocated partition.
    • Select Extend.

    Let us know if you're able to combine the spaces after following the steps above.

    Regards.
     
    Ruz San, Jun 13, 2021
    #3
  4. MrGenius Win User

    Cannot change unallocated space into partition with drive letter

    Not Getting Able to Merge Drive with Unallocated Space!

    You should be able to right click on partition I:, in Disk Management, and select Extend volume... to add the unallocated space to partition I:. It should be as simple as that. You can't "merge" unallocated space with a partition, because unallocated space is not a partition. To "merge" 2 things those things need to be the same type of thing.

    And no, it's not illegal to copy files to another drive.
     
    MrGenius, Jun 13, 2021
    #4
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Cannot change unallocated space into partition with drive letter

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