FOTO BIBLIOTHEEK

Hi WILLEM2222,

Thank you for using the Apple Support Communities. You've posted a question in the English Community. If you are able to repost your question in English, you may reach a larger audience and have a better chance of receiving a reply.

Thanks!

WILLEM2222,

Thank you for reposting your question in English!

What exactly happens when you attempt open Photos and view your photos? Do you see a specific error message or alert?

I'd like to check to make sure you are opening the correct library when launching Photos. To do this, please hold down the 'option' key on your keyboard while clicking on Photos to open it. You should be prompted with a 'Choose Library' box. When you see this, single click on your library, then click 'Choose Library' at the bottom-right corner. Does this open your Photos successfully?

If Photos still fails to open, I would like you to try resetting permissions for your home folder, in the case they were accidentally changed. To do this, follow the steps under 'Reset permissions' in this article: Resolve issues caused by changing the permissions of items in your home folder - Apple Support.

Keep me posted.

Is your external volume compatible with Photos for Mac? Please check the file system format and also, if the volume has been used for Time Machine backups. See this document: De fotobibliotheek verplaatsen om ruimte te maken op een Mac - Apple Support, in particular the section "De schijf voorbereiden"