By AOMEI / Last Updated April 10, 2020

Need to partition external hard drive in Windows 10

When Windows 10 system disk is almost running out of space, it’s a nice choice to attach an external hard drive to store non-system files. To use a brand new external hard drive in Windows 10, you should to initialize and partition it in advance. You can divide your external hard disk into separately sections for different usage by partitioning it. Surely, you can also choose to partition it as one partition.

Two ways to partition Windows 10 external hard drive

Now, let’s get to know how to partition an external hard drive in Windows 10 quickly and easily. Here listed two ways, you can choose one as you like.

Option A. Partition external hard drive via Disk Management

Windows 10 has its partition tool Disk Management. If your external hard drive hasn’t been partitioned, you can partition hard drive windows 10 with Disk Management. The steps to partition an external drive with Disk Management are listed as below:

1. Type “diskmgmt.msc” in the search box and press Enter.

2. Right-click the unallocated space and select New Simple Volume. Click Next.

3. Enter the "Simple volume size in MB" and click Next.

4. Select a drive letter and partition label. Click Next.

5. Select file system for this partition. If you only use this drive for Windows operating system (OS), choose NTFS (which has better performance but only works with Windows). Otherwise, choose exFAT. Do not change the Allocation unit size, which is important. Click Next.

6. Review the settings and click Finish.

This is how Disk Management handles with partitioning external hard drive. If you need something simpler and easier to understand, you can try AOMEI Partition Assistant.

Option B. Partition external hard drive via third-party partition manager freeware

AOMEI Partition Assistant Standard is a free partition tool for Windows 10/8.1/8/7/XP/Vista, with which you can partition external hard drive effortlessly even if seeing it for the first time. Let’s how it works:

1. Free download AOMEI Partition Assistant Standard and launch it.

2. Right-click the unallocated area and select Create Partition.

3. In the next screen, drag the slider from both sides to specify the size and location of the new partition. Then click OK. Unlike Disk Management, the program hasn’t done anything to your external hard drive until now but shows you how it looks like after the operation.

4. Click Apply to run the process.

If your external hard drive has been partitioned, you can also use this method to create new partitions or use Resize Partition to repartition the hard drive.

Besides being able to partition Windows 10 external hard drive, AOMEI Partition Assistant Standard provides many useful features for managing your hard drives, such as converting to data MBR disk to GPT disk without data loss, delete all partitions from external hard drive, etc. For more advanced features, like converting system MBR disk into GPT without deleting partition, you can use AOMEI Partition Assistant Professional.