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Unknown File Types

By kcav ·
I am running Windows 2000, 5.0 SP 4.

In Windows Explorer I selected folder %system%/system32/drivers, and sorted on Type. Nearly all the files in the Driver folder ended in sys, but there were exceptions. For instance, there is a file named gm.dls and one called gmreadme.txt. In gmreadme it said, the gm.dls file contains the Roland Sound Canvas Sound set.

I entered Start | Search | Folders & Files for *.dls. No other dls type files were found! Then I clicked on Tools, Options, File-Types, and looked for type dls. There is no dls file type listed in the directory of File Types.

How can a program use a file type that has not been defined? How can I find out what gm.dls does? Should it be deleted?

There is also a file eacpi2m.ecw. I right clicked on it, and clicked Properties. Its description said, Unknown application. There is no other ecw file on my machine, and there is no file type ecw listed under file types. What should I do with this file? Should I delete it?

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by TheChas In reply to Unknown File Types

If an application knows what to do with a file, it does NOT need to be registered with Windows.

Many of the extensions on device driver files are not registered. This is because the inf file for the driver only needs to know where the file is located in order to properly use it.

The gm.dls file is used by a sound card to process the data and create the sounds requested.

The file eacpi2m.ecw likely is used by another hardware device.

Unless you are having a specific problem, I would leave ALL files in the System32\Drivers folder alone.


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by kcav In reply to

I am sure you are correct. I realize That I am being overly fussy about file classification, still,the problems I have experienced have not required code change, its been can't find the inf or dll.

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by CG IT In reply to Unknown File Types

I'm with TheChas on this. If it isn't broken, don't try and fix it.

I've looked at your other 5 questions of files and what they are and what you can do with them and IMO it's best not to muck around in the system, system 32, device and DLL files. Doing so is very much like editing the registry and one innocent delete of a Dynamic Link Library file thats shared with other programs can really cause your problems.

Unlike Windows XP which, "cough" is supposed to be self correcting, W2K does get registry bloat to where one might have to just reinstall windows to fix problems [which is why most with extenstive knowledge of W2K put the O/S on one partition and all other programs/files/ junk and what not on another partition. You can reinstall W2K without losing that data on the other partition.

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by kcav In reply to

Thank you for your reply. I am sure you are right. I appreciate your guidance.

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by kcav In reply to Unknown File Types

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