Hard Drive Full, can't figure out why My mac recently started to indicate that the startup disk was full. I went thru and cleaned out all the disk images and videos and other large files that I could find. Emptied trash. Emptied downloads.   

If you look at the screenshot I'm having a really hard time figuring out what's in that 659GB.  Any clues?



2012 MacBookPro with 1TB SSD 
macOS 10.14.3 with 4 users (me primarily, wife and two kids who rarely use it) 
Virtualized with Windows7 via VMWare Extreme 
iTunes is not used, no music 
iMovie: cleaned library
iPhoto and Photos still installed


A suspicion: From what I've read about when Photos replaced iPhoto that used a pointers system for Photos to point at the iPhoto files from the old iPhoto library rather than creating a new duplicate library. I still use iPhoto for my photography hobby as I can color correct, edit, organize, etc. Photos was imposed on me in a software update.  

Anyway, if you look below, the two outer rings are both about the same size.  The outermost ring has the same name as the item at the top of the list on the top right. The next ring has a different name and is slightly smaller. The "storage" button (screen shot above) from "About This Mac" lists a much smaller amount counted as photos (yellow).

Last is the Photos info button results (iPhoto doesnt seem to offer info about the library linked to it)
Assuming your directory is correct, you have the following folders to move off the drive or to thin out:


558 GB photos library
67 GB Windows 7 disk image and files


If you have a good backup, you should be able to simply copy those to an external drive, train them and see that all the space you expect is freed.

The virtual windows files runs great on an external - and thinning it might be tough. 

Photos is a little easier to rebuild and clean up - you might need a tool like Power Photos if you don't like merging libraries or have a good strategy to move some files to a secondary library or would be willing to move the primary photos to iCloud and let photos only store thumbnails / free up or "optimize" space on your Mac.

I wouldn't do cloud first unless you are sure you archive the originals or can walk away from photos if iCloud crashes or corrupts things, though.