DT File Extension

What is DT file?

The older version of Apple’s Macintosh versions utilized a data fork file extension known as .DT. In general, fork files are used to store additional data or information that is associated with any normal object file. Depending on the type and strength of the system, it may be able to support either one or numerous fork files. A fork file has no size limits and at times, it could exceed the actual data file in size. The Macintosh Data Fork Files were used on earlier versions of the computer and could not be accessed by the general user. They were more specifically present for the system itself.

Programs which support DT file extension

The following listing features DT-compatible programs. Files with DT extension, just like any other file formats, can be found on any operating system. The files in question may be transferred to other devices, be it mobile or stationary, yet not all systems may be capable of properly handling such files.

Updated: 03/07/2023

How to open file with DT extension?

Being unable to open files with DT extension can be have various origins. On the bright side, the most encountered issues pertaining to Macintosh Format Data Fork files aren’t complex. In most cases they can be addressed swiftly and effectively without assistance from a specialist. The following is a list of guidelines that will help you identify and solve file-related problems.

Step 1. Install Mac OS X software

The most common reason for such problems is the lack of proper applications that supports DT files installed on the system. To address this issue, go to the Mac OS X developer website, download the tool, and install it. It is that easy Above you will find a complete listing of programs that support DT files, classified according to system platforms for which they are available. The safest method of downloading Mac OS X installed is by going to developer’s website (Apple, Inc.) and downloading the software using provided links.

Step 2. Check the version of Mac OS X and update if needed

If you already have Mac OS X installed on your systems and DT files are still not opened properly, check if you have the latest version of the software. Software developers may implement support for more modern file formats in updated versions of their products. This can be one of the causes why DT files are not compatible with Mac OS X. All of the file formats that were handled just fine by the previous versions of given program should be also possible to open using Mac OS X.

Step 3. Assign Mac OS X to DT files

If you have the latest version of Mac OS X installed and the problem persists, select it as the default program to be used to manage DT on your device. The next step should pose no problems. The procedure is straightforward and largely system-independent

The procedure to change the default program in Windows

• Right-click the DT file and choose Open with option
• Select Choose another app → More apps
• The last step is to select Look for another app on this PC option supply the directory path to the folder where Mac OS X is installed. Now all that is left is to confirm your choice by selecting Always use this app to open DT files and clicking OK.

The procedure to change the default program in Mac OS

• Right-click the DT file and select Information
• Open the Open with section by clicking its name
• Select the appropriate software and save your settings by clicking Change all
• If you followed the previous steps a message should appear: This change will be applied to all files with DT extension. Next, click the Continue button to finalize the process.

Step 4. Verify that the DT is not faulty

Should the problem still occur after following steps 1-3, check if the DT file is valid. It is probable that the file is corrupted and thus cannot be accessed.

1. Check the DT file for viruses or malware

Should it happed that the DT is infected with a virus, this may be that cause that prevents you from accessing it. Immediately scan the file using an antivirus tool or scan the whole system to ensure the whole system is safe. DT file is infected with malware? Follow the steps suggested by your antivirus software.

2. Verify that the DT file’s structure is intact

If the DT file was sent to you by someone else, ask this person to resend the file to you. The file might have been copied erroneously and the data lost integrity, which precludes from accessing the file. It could happen the the download process of file with DT extension was interrupted and the file data is defective. Download the file again from the same source.

3. Ensure that you have appropriate access rights

Sometimes in order to access files user need to have administrative privileges. Switch to an account that has required privileges and try opening the Macintosh Format Data Fork file again.

4. Verify that your device fulfills the requirements to be able to open Mac OS X

If the system is under havy load, it may not be able to handle the program that you use to open files with DT extension. In this case close the other applications.

5. Check if you have the latest updates to the operating system and drivers

Regularly updated system, drivers, and programs keep your computer secure. This may also prevent problems with Macintosh Format Data Fork files. It is possible that one of the available system or driver updates may solve the problems with DT files affecting older versions of given software.

Do you want to help?

If you have additional information about the DT file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on DT file.