deleting UNRATED pictures

You can do a search where the rating is "less than or equal to" # of Stars.

In the Inspector to the right point to Library/All Protos then click on the little magnifying glass next to the seach field on the right side of your screen. A search pop-up will show and here you change to the setting "Rating: is less then or equal to:" and move slider to three stars.

In the browser you will now see all the images with three and less stars. Select all images by pressing "Command+A". Delete the images by pressing "Command+ <-". You will now get a warning that tells you that the images will be deleted from your Aperture library. If any of those images are referenced then you can choose to delete the referenced masters whereever they are located.

All masters and versions of those images will be permanently deleted from your Mac.

Karsten 🙂

Select the Library and click on the little magnifier next to the name. Select "is less than or equal to" and move the slider to 3 stars.

All your 3 stars and below will then show up.

Regards
Paul K