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HDU file extension

The table below provides useful information about the .hdu file extension. It answers questions such as:

  • What is the .hdu file?
  • What program do I need to open a .hdu file?
  • How can the .hdu file be opened, edited or printed?
  • How can I convert .hdu files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ FM-ONE User Data

HDU file is a FM-ONE User Data. FM-ONE is a flash programmer device developed by Hokuto Denshi Co. Ltd.
HDU format description not yet available
Category: Data files
Application: FM-ONE
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
HDU aliases:
HDU related links:
HDU related extensions:
FM-ONE Host Side Bootcontrol Data

FM-ONE Parameters Data

FM-ONE Target Protocol Data

FM-ONE Target Write-in Control Data

Other types of files may also use the .hdu file extension.

🚫 The .hdu file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

dhu, gdu, hcu, hd, hdh, hdi, hdk, heu, hru, hu, hud, mdu, ndu, tdu

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

General Hard Disk Image
Autodesk AutoCAD Heidi Device Interface
HotDocs Auto-Install File
Sony Playstation 2 SCEI Instrument Set Data
Shadowgrounds: Survivor Unit
The Suffering: Ties That Bind Data
Hungarian Language Info File
XLarn User Data
HUD Maker File
Harmony Controller Update Data

🔴 Can't open a .hdu file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .hdu file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .hdu file extension, write to us!

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