How to partition a hard drive in Windows 10

Partitioning a hard drive isn’t particularly difficult. You can easily do it yourself in just a few steps. To start, you’ll need to open Disk Management in Windows 10:

1. Press [Win] + [R] simultaneously
2. Type “diskmgmt.msc” into the window (Marked 1 on graphic)
3. Press [Enter] or click “OK” (Marked 2 on graphic)

Alternatively, you can open Disk Management using the Windows symbol on the bottom left of the taskbar. Right-click on the Windows symbol and a menu will open. Choose “Disk Management” from the menu.

We want to give the new external hard drive (Disk 1/External) an additional partition for data, which should be around 240 GB (=around 240,000 MB). To make space for the new partition, you’ll want to split the total volume of the disk (in this case around 465 GB) using the menu item “Shrink Volume”. You can get to this menu by right-clicking on Drive 1 (external).

Next, a window will open in which you can enter the amount of space to shrink (in this case around 240,000 MB). Below that, Windows shows the total size of the partition after shrinking (in this case around 236,000).

The partitioning process isn’t over yet. To use the partition with Windows Explorer, you’ll have to assign the new storage area another volume with its own drive letter. To do this, right-click on the shaded (unassigned) area and choose the entry “New Simple Volume” from the menu.

Next, the “New Simple Volume Wizard” will open. Click on “Next” to go to the next step.

In the next step, you can specify the size of the volume. If you want to assign the volume all the available disk space, you don’t have to change anything. But you can also set up several volumes/partitions; if you want to do this, enter a smaller value here (e.g., 120,000).

Now it’s time to assign a drive letter. In this example, we chose the letter D from the list of suggestions (see 1). Letters that are already being used by other drives don’t appear in the list. (If necessary, though, you can switch out most letters in Disk Management.) If you don’t change anything, Windows will use the pre-suggested letter. Once you’re done, click “Next” (see 2).

The next step is to name the volume. We delete the default entry “Volume” and replace it with the name “Data” (see 1). It’s also possible to specify a different file system here. If you’re working with an internal hard drive or external storage device that primarily works with Windows PCs, you can stick with the preset NTFS file system. When you’re finished, click “Next”.

In the final step, all the settings that you’ve chosen and values that you’ve specified will show be shown. If everything there is correct, click on “Finish”.

The wizard then closes, and you’ll end up back in the default Disk Management window. You should see the result of the configuration: The volume labeled “Data” was successfully set up. If necessary, you can further divide any of the volumes shown here.

If your hard drive hasn’t been partitioned at all, Disk Management will look as follows: