Windows 10: unallocated space during install

Discus and support unallocated space during install in Windows 10 Installation and Upgrade to solve the problem; When I i nstall win 10 from usb. My 4Tb barracuda is choppes in 2. See the image attached. [img] Drive 0 unallocated space 2047 gb Drive 0... Discussion in 'Windows 10 Installation and Upgrade' started by CapFlam128, Jun 15, 2017.

  1. unallocated space during install


    When I i nstall win 10 from usb. My 4Tb barracuda is choppes in 2.
    See the image attached.
    unallocated space during install [​IMG]


    Drive 0 unallocated space 2047 gb
    Drive 0 unallocated space 1678 gb

    Why I don't see drive 0 2047 and 1678 into 1 unallocated space and install it.

    :)
     
    CapFlam128, Jun 15, 2017
    #1
  2. GuruAid Win User

    Can some suggest the best way to go at cleaning this up?

    First of all I will make you understand, what is unallocated partition showing on the drive is:

    A computer describes any physical space on a hard drive that doesn't belong to a partition as unallocated. This means that no programs can write to the space. For all practical purposes, the space doesn't exist to the operating system. To make use of unallocated
    space, you need to either create a new partition using the space.

    Now please find how to create new portion from unallocated space of the hard drive:

    Most often, partition creation takes place during operating system installation. When you install Windows, for example, the installer will ask you to divide up your drive into partitions. Unless you specifically choose to leave unallocated space, the installer
    will partition the entire drive. You can also create new partitions within Windows through the 'Disk Management' from 'Control panel'. 'Right-click' an area of 'unallocated space' and click 'New Simple Volume'. By default, this method will turn all unallocated
    space into a single new partition and now you can store the data or files in it.

    Hope this will help you.
     
    GuruAid, Jun 15, 2017
    #2
  3. Saltgrass Win User
    The partitions on the disk selected for Installation are not in the recommended order for additional information about installing to GPT disk go to the Microsoft website and search for GPT

    The easiest way is during the install. You don't have to use Diskpart to remove the 4 Critical partitions.

    You do not have to recreate or format any partitions, the install will do that in the unallocated space.
     
    Saltgrass, Jun 15, 2017
    #3
  4. Bree New Member

    unallocated space during install

  5. NavyLCDR New Member
    That is only true when the drive is partitioned using MBR partitioning which computers with legacy BIOS or using CSM emulation in UEFI use. If @CapFlam128 has a computer with UEFI, it should be booted from the USB flash drive in UEFI mode, open a command prompt by pressing shift + F10 when the first screen appears, and run the following in the command prompt:

    diskpart
    select disk 0
    clean <- NOTE THIS ERASES THE ENTIRE DRIVE!
    convert gpt
    exit
    exit

    Then the drive will appear as a single unallocated space on the custom install drive and partitions list.
     
    NavyLCDR, Jun 15, 2017
    #5
  6. cereberus Win User
    As addional clarification, occasionally, it is sometimes necessary to upgrade bios to see all of space even on a GPT drive - some older pcs limited maximum size to e.g. 3GB. Most likely not an issue but this can happen now and then.
     
    cereberus, Apr 4, 2018
    #6
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