How do I delete a locked layer in AutoCAD?

To delete a locked layer in AutoCAD, use the LAYDEL command.

Here's how:

1. Type LAYDEL (or Layer Delete) in the command line and press Enter.
2. AutoCAD will prompt you to select an object on the layer you want to delete. You can either select an object directly on the locked layer or type N (for Name) and press Enter, then type the name of the locked layer and press Enter.
3. A warning message will appear asking you to confirm the deletion of the layer and all objects on it. Click "Yes" to proceed.

The locked layer, along with all its objects, should now be deleted. This method bypasses the lock and allows you to remove the layer.