Windows 10: Why is Mark Partition Active Greyed out in Disk Management?

Discus and support Why is Mark Partition Active Greyed out in Disk Management? in Windows 10 Drivers and Hardware to solve the problem; Hi, Yesterday I used Disk Management on a couple of 16GB USB flash drives to create a New Simple Volume ran a Full Format on them both as FAT32 with a... Discussion in 'Windows 10 Drivers and Hardware' started by sportsfan148, May 20, 2018.

  1. Why is Mark Partition Active Greyed out in Disk Management?


    Hi, Yesterday I used Disk Management on a couple of 16GB USB flash drives to create a New Simple Volume ran a Full Format on them both as FAT32 with a single partition. Both of them are set up as MBR drives so theres no issue there.
    Then I decided I'd like to mark one of them as Active so I could set it up as a bootable installation flash drive.
    On both of the flash drives when I right click on the drive the "Mark Partition as Active" option is greyed out.
    Can anyone explain why?

    :)
     
    sportsfan148, May 20, 2018
    #1

  2. unmark a partition as "active"

    Hello Bob,

    Thank you for posting your concern in Microsoft Community and welcome to the Windows 10 Family.

    Please be informed that marking a partition as active on a basic disk means that the computer will use the loader (an operating system tool) on that partition to start the operating system. An active partition is a partition on a hard drive set as the bootable
    partition that contains the operating system. So it is not advisable to configure anything related to boot partition.

    Please follow the below steps to unmark the partition as active:


    • Open command prompt by pressing Windows key + X and selecting “Command prompt admin”.

    • Type in diskpart and press Enter.
    • To identify which disk you need to work with. Type the command: list disk.

      This will list all the drives connected to your computer.

    • To select the disk enter the command: select disk n

      "n" will correspond to the disk # for the ssd you are referring to.

    • To list all the partitions on the disk enter the command:
      list partition

    • To select a partition use: select partition n

      Substitute "n" correctly and it will select the particular partitions on that drive.

    • To unmark the current partition as active use the command line:
      inactive

    • Exit the command prompt using command:
      exit

    • Reboot the system to let the changes happen.

    Hope the above information is helpful. If you need further assistance, we would be happy to help you.

    Thank you.
     
    Sayan_Ghosh, May 21, 2018
    #2
  3. unmark a partition as "active"

    After changing to active partition my computer doesn't boot so what can I do now?
     
    Ayush Chandra, May 21, 2018
    #3
  4. Why is Mark Partition Active Greyed out in Disk Management?

    Hi, Yesterday I used Disk Management on a couple of 16GB USB flash drives to create a New Simple Volume ran a Full Format on them both as FAT32 with a single partition. Both of them are set up as MBR drives so theres no issue there.
    Then I decided I'd like to mark one of them as Active so I could set it up as a bootable installation flash drive.
    On both of the flash drives when I right click on the drive the "Mark Partition as Active" option is greyed out.
    Can anyone explain why?

    :)
     
    sportsfan148, May 24, 2018
    #4
Thema:

Why is Mark Partition Active Greyed out in Disk Management?

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