The speed of your external hard drive has a significant impact on disk performance.
But do you know how to test external hard drive speed on Windows 10/11?
External hard disks are widely used for storage space expansion,data backup, file transfer, etc.
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The speed of external hard disks directly affects the file transfer speed and tool loading speed.
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Read this post to learn how to optimize hard drive for gaming.

How to Test External Hard Drive Speed
Method 1.
So, you might go to Task Manager to check the disk speed.
Method 2.

Use Command Prompt
Command Prompt is a command line tool in the Windows operating system.
Here you could see how to use a specific command line to test the external hard drive speed.
Typecmdin the Windows search bar.
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When theCommand Promptwindow appears, choose theRun as administratoroption.
In the command line window, typewinsat disk -drive Xand pressEnter.
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Method 3.
Here we recommend you use the free partition manager,MiniTool Partition Wizard.
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Now, tap the button below to download MiniTool Partition Wizard, and then start the disk benchmark process.
MiniTool Partition Wizard FreeClick to Download100%Clean & Safe
Step 1.
Launch the downloaded free disk manager to enter its main interface.
Click theDisk Benchmarkoption from the top menu bar.
Under theDisk Benchmarksection, configure the required parameters and then click theStartbutton.
See more instructions in this post:How to Measure Disk Performance With Disk Benchmark.
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How to recover deleted files without backup on Windows and Mac?
Bottom Line
How to test external hard drive speed?
you could get specific disk speed data from Task Manager or use CMD or MiniTool Partition Wizard.