On my MAC when I got to Photos preferences / icloud and select icloud photo Library it says not enough space
What is the exact error message? Is not enough space on your Mac or in iCloud?
- If you cannot enable iCloud Photos because of not enough space on your Mac, disable the "download originals" options. Photoswill not allow you to enable iCloud Photos with "Download originals", if the photos already in iCloud will not fit onto your Mac, in addition to the existing photos on your Mac.
- If you cannot enable iCloud photos because the photos in your Photos Library will not fit into the iCloud storage in addition to the photos already in iCloud, check the size of the free iCloud Storage. You need enough free iCloud storage to upload the complete library in addition to the photos already in iCloud. Are most of your photos already in iCloud, uploaded from other devices?
How much free cloud storage do you have?