How to Do Disk Partition in Windows 8

Creating a new partition in Windows 8 or Windows 8.1 is pretty easy. Follow the steps that I indicate a little below. It is done in a similar way to creating it in Windows 7, which you can see at that link.

It is advisable to make a backup copy of your things before following these steps, although it is not mandatory. If you prefer, you can continue:

Click the RIGHT button on the Windows Start menu and choose Disk Management.

The disk manager opens. Include a list of hard drives or CD / DVD drives, attached pen drives or other partitions that your PC has. The graphic below the list indicates the letter, size and the name of each drive or partition (Disk 0, Disk 1, etc.).

NOTE: Disk Partition in Windows 8

Disk Partition in Windows 8
Disk Partition in Windows 8

If a drive has more than one partition, you will see each one marked with a blue band at the top in addition to its letter, size and type.

You can only create a new partition what is called “unallocated” space on a disk. It’s distinguishable because it has a black bar on top and it says “Unassigned” (and the size).

Click with the RIGHT button on the unallocated space on the disk where you want to create it. Choose New Simple Volume.

Go ahead Next in the first window of the wizard that starts.

In the new window define the size (in MB) you want the partition to have. I remind you that 1 GB = 1024 MB. Write a value that is between the minimum and maximum indicated by the window. Or keep the one suggested by the assistant (it matches the maximum available). Hit Next when done.

Click to select the option Assign the following drive letter if it is not already chosen. Then click on the drop-down list on the right and select the letter you want to give to the new partition (or leave the one suggested by the wizard). Confirm with Next.

Choose the Format this volume option with the following settings. And define your options like this:

File System. Typically, you should choose NTFS. But you can see FAT or NTFS to know which one suits you in each case.

Related: How To Hide And Show Folder In Windows 10?

How to resize a disk partition in Windows 8

Allocation unit Keep the default.

Volume label.

Write if you want a name that describes what the partition will contain. For example, data, the name of another Windows that you are going to install on it, etc. It is NOT mandatory to do so.

DISABLE the Quick Format check box.

Hit Next when done.

You will see a summary window of the options you have chosen. Check that they are correct and click on the Finish button below.

You return to the Disk Management window before. The new partition should now come out with a blue bar on top. A percentage indicates the progress of the formatting (sometimes it takes time to appear). When it reaches 100% close the window.


You may get a notice that proposes to format. Close it.

Open the Start menu and choose File Explorer. Check that the new partition is there among your other drives.

Solve problems when creating partitions

PROBLEM 1: There is no unallocated space to create the new partition

Disk partition in windows 8

  • Open the Windows Start menu and choose Disk Management if you are not already there.
  • Right-click on the disk where you want to create the partition. Select Decrease Volume (see image above).
  • Windows check the available space. Then a window comes out. Indicate on it the size in MB that you want to assign to the new partition that you are going to create. Type its value in the Size of the space you want to reduce the field, in MB. At most, it can be the one that appears in the field Space available for reduction. Press Reduce.
  • Afterward, there must already be unallocated space on the disk (indicated by a black band above it).

PROBLEM 2: The new partition does not appear after creating it

And you can’t access it. This happens when there is another drive or partition that has the same assigned letter. It is usually solved by attributing a different one to it by doing this:

  • How to merge disk partition in Windows 8 just go into Disk Management as I explained in step 1 above.
  • Click the RIGHT button on the new partition that you have created. Select Change drive letter and paths.
  • Press the Change button.
  • The Assign the following drive letter check box must be selected. Choose a different letter from the list on the right than the one you chose when creating the partition. Click OK. Confirm the notice that you get.
  • Check that the partition already appears in Windows file explorer.


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