Hi, After I updated to El Captain, I keep getting this error message "Time Machine Not Enough Space". I have a 2TB hard drive and while it says there is 23GB left TM won't back up. I always understood old files would be deleted to give space to newer ones but I can't figure out why this is happening. I went to TM preferences and could not figure out. It's been already 14 days without any TM backup. I appreciate any help.