No released space although huge deleted files


macrumors newbie
Original poster
May 15, 2019
Hi. I`ve read some of the threads similar to this in this forum and in others and tryed some of the options without success.

I have a Imac Yosemite 10.10.5 and work with video. I have left now only 8gb and my memory is of 1tb. Using OmniDiskSweeper I've found out where are my huge files but the problem is that when I delete them (even emptying the trash folder), very little space is released. Exemple, I deleted a video of 37 gb and only 1 gb was added up to free space in finder. My time machine is off. Please, help. What can I do?

Thanks a lot.