Resolved 'Missing' disk space - help!

[Sirolway]

Hi All

I have a 2009 13" MBP with a 512GB SSD
Yesterday I had ~200GB available, now I have 3GB.

The disk space reported used by the Finder adds up to 275GB
The space reported used by du at the command line adds up to 247GB:
17G Applications
21M Incompatible Software
796K Installer Log File
4.0G Library
0B Network
3.2G System
223G Users

So there's 200+GB not accounted for!
I've run Disk Utility off the recovery drive & repaired the SSD, but that doesn't seem to have made any difference

Any ideas how I can locate & make this space available?

I don't *think* that much of my SSD has just gone bad (I've been using it for a few years), but I'm open to suggestions

 

[maflynn]

Download and run OmniDiskSweeper (its free) It will provide a sorted list of your files/folders and show you where all your space is going. It includes system and hidden folders

 

[Sirolway]

I found a /Volumes directory that had 200GB of files in it, due to an error in an rsync backup script

So problem solved
I used this command to find the files:

sudo du -d 1 -x -c -g /