Q: I up dated my Mac and my reading list disappeared  can you help me find it and I can't add anything to it either

Thanks for joining Apple Support Communities, lianao22!

It appears that your Safari reading list has disappeared from your iMac. I certainly love being able to go back to something I either lacked time to read or wanted to save the information for another time. I'll be more than glad to help!

Get help using iCloud Bookmarks and Reading List -- If you were syncing your bookmarks and reading lists through iCloud, you can use this article to troubleshoot or restore them to your iMac.

If Safari is slow, stops responding, quits unexpectedly, or has other issues -- Since you're unable to add new ones, make sure nothing is blocking that ability.

Use Time Machine to back up or restore your Mac -- If you've been using Time Machine to keep your data safe, you can simply use it to restore.

Have a great day!