2 months ago, one of my customer asked me how to disable launch forms in external lists.I noticed in the MSDN forums that the question often pops up.
Indeed, in a normal list, if you go to advanced settings, you will find the following option :
This option is not available in the case of an external list;here are the List settings options of an external list:
However, the Advanced settings page of a normal list can be found by typing the url …\layouts\advsetng.aspx?list=<list id>; the good news is you can use this url with an external list and you get:
And when you add an item for instance, you get this: