How can I convert my "iPhoto" files to "Photos" ?

Hi Niel,

Thanks for the tip, but when I launch Photos with the Option key down, I just see what I've attached below. I should have said I have an iMac 2020 running Big Sur 11.3.1, and the iPhotos are in my backup external drive (Time Machine).

DOH !

Sorry Niel, when I gave my first reply I held down Option and held the cursor down on the "Photos" logo and a window popped up with "Options" (3), "Open at Login", and "Show in Finder".

I just went back to retry and this time I didn't hold the cursor down but just clicked the logo and — up popped the window you referred to ..... PROBLEM SOLVED !!!!!!!!!!