I was unpacking a file .zip, when finished just stay one file. nrg
What kind of file is this?.
Is for Amiga OS 3.x?
as mentioned earlier it is a CD image file similar to an ISO file. you should be able to burn it to a CD, but if you can't (or don't want to), try using
diskimage.device for OS3. i use the OS4 version all of the time to mount ISOs (and NRGs) to the workbench and it works quite well. it comes with a GUI so you don't have to do everything from the shell.
i don't know how it works under OS3, but on my SAM it works like a charm. let us know if this helps....
-- eliyahu