Hi. I have had this Macbook for about 3 years, and now it is running out of Disk Space, but i barely have anything on the computer. Now when i restart the computer it waits about an hour before annoying me with it's low disk space and it makes me force quit everything i have open. So then i was so annoyed by it, i finally deleted stuff, so i deleted about 5 apps i did not use, then went to Imovie and deleted about 10 videos, then emptied the trash but then 5 minutes later it said it was still low on disk space. I have not downloaded anything within the past month, so i have no idea how this could be happening. What could possibly fix this problem?
Check to see if some of the space is being used by your sleepimage file.
Check the System Memory tab in Activity Monitor to check page outs and swap used. If swap used is significant, restart your computer and track that value under your normal workload. If you have significant page outs under normal use, you could benefit from more RAM.
Search with Finder to see if the space is being consumed by a very large file or several large files. Adjust the 50GB in the illustration to whatever size you deem appropriate.
If you would like to free up space on your MacBook Air, download OmniDiskSweeper. Afterwards double click Macintosh HD then scroll down until you find a file called .cleverfiles. Clicking on that should take you to a couple of files, one being hlink.db. This files basically holds all the files that you ever had in your trash whether you emptied it or not. If you double click on that file it should open it in finder. Simply move the file into the trash and emty it. The file should regen itself. If so then move it to the trash again. The file will keep regenerating itself but eventually your mac's storage should grow by a lot. Don't worry about getting rid of the file just make sure that your storage is bigger and if not keep destroying the hlink.db file. Hopefully this helped