TOS File Extension

What is TOS file?

TOS filename suffix is mostly used for Atari ST TOS Archive files. TOS files are supported by software applications available for devices running . Files with TOS extension are categorized as Archive Files files. The Archive Files subset comprises 619 various file formats. Atari ST is by far the most used program for working with TOS files. Atari ST software was developed by Atari, Inc., and on its official website you may find more information about TOS files or the Atari ST software program.

Programs which support TOS file extension

Below is a table that list programs that support TOS files. Files with TOS suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

How to open file with TOS extension?

Being unable to open files with TOS extension can be have various origins. Fortunately, most common problems with TOS files can be solved without in-depth IT knowledge, and most importantly, in a matter of minutes. The list below will guide you through the process of addressing the encountered problem.

Step 1. Download and install Atari ST

Problems with opening and working with TOS files are most probably having to do with no proper software compatible with TOS files being present on your machine. The solution to this problem is very simple. Download Atari ST and install it on your device. Above you will find a complete listing of programs that support TOS files, classified according to system platforms for which they are available. The safest method of downloading Atari ST installed is by going to developer’s website (Atari, Inc.) and downloading the software using provided links.

Step 2. Check the version of Atari ST and update if needed

If the problems with opening TOS files still occur even after installing Atari ST, it is possible that you have an outdated version of the software. Check the developer’s website whether a newer version of Atari ST is available. Sometimes software developers introduce new formats in place of that already supports along with newer versions of their applications. This can be one of the causes why TOS files are not compatible with Atari ST. The latest version of Atari ST should support all file formats that where compatible with older versions of the software.

Step 3. Set the default application to open TOS files to Atari ST

If the issue has not been solved in the previous step, you should associate TOS files with latest version of Atari ST you have installed on your device. The process of associating file formats with default application may differ in details depending on platform, but the basic procedure is very similar.

The procedure to change the default program in Windows

• Clicking the TOS with right mouse button will bring a menu from which you should select the Open with option
• Click Choose another app and then select More apps option
• To finalize the process, select Look for another app on this PC entry and using the file explorer select the Atari ST installation folder. Confirm by checking Always use this app to open TOS files box and clicking OK button.

The procedure to change the default program in Mac OS

• From the drop-down menu, accessed by clicking the file with TOS extension, 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 TOS extension. Next, click the Continue button to finalize the process.

Step 4. Check the TOS for errors

If you followed the instructions form the previous steps yet the issue is still not solved, you should verify the TOS file in question. It is probable that the file is corrupted and thus cannot be accessed.

1. The TOS may be infected with malware – make sure to scan it with an antivirus tool.

If the file is infected, the malware that resides in the TOS file hinders attempts to open it. It is advised to scan the system for viruses and malware as soon as possible or use an online antivirus scanner. If the scanner detected that the TOS file is unsafe, proceed as instructed by the antivirus program to neutralize the threat.

2. Ensure the file with TOS extension is complete and error-free

If you obtained the problematic TOS file from a third party, ask them to supply you with another copy. During the copy process of the file errors may occurred rendering the file incomplete or corrupted. This could be the source of encountered problems with the file. It could happen the the download process of file with TOS 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

Some files require elevated access rights to open them. Switch to an account that has required privileges and try opening the Atari ST TOS Archive file again.

4. Make sure that the system has sufficient resources to run Atari ST

If the systems has insufficient resources to open TOS files, try closing all currently running applications and try again.

5. Verify that your operating system and drivers are up to date

Up-to-date system and drivers not only makes your computer more secure, but also may solve problems with Atari ST TOS Archive file. Outdated drivers or software may have caused the inability to use a peripheral device needed to handle TOS files.

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