Can you help me with my iMac hard drive storage problem?

Whoa there.. Disk Utility will erase the entire disk. It doesn’t just delete certain files. And you can’t erase the start-up disk since it is the start-up disk.

If you were able to erase it the computer would no longer be able to boot.

If you want to delete some files just drag them to the trash in your dock. Then right click or control + click the trash can and select “Empty Trash”.

https://imgur.com/a/Wa89a

Edit :: And you can also do this from the Finder.

https://imgur.com/a/X1n26

Thank you very much for your response.
I’ve performed the procedure that you give and I have few files left on my hard drive:
25.03 GB Apps
19.6 GB Movies
3.9 GP Audio
3.52 Photo
Then this 944.45 GB of “Other”
I’m trying to delete the “Other” files (I don’t see them). I go to my hard drive and all I see is a few movies, photos, video and a very few documents and down-loads (nothing that can take up over 900 GB of memory.

Also I have noticed that when I delete files by dragging them to the trash and emptying the trash that instead of freeing up hard drive space the file space that was deleted is just renamed as “other”.

Other files can be important stuff that OS X doesn’t really know how to categorize. It can be stuff like caches and even your browsers bookmarks. If there was some magic “delete other” button you would be in a world of hurt.

You might want to install Grand Perspective and it will sort of show you what is using space.

Here is mine.

https://i.imgur.com/xSYAyP4.jpg

Here is a link to the software.

http://grandperspectiv.sourceforge.net/

Install updates and restart. Really.

OSX/MacOS can predownload a lot of files for OS updates or other software, and not delete them until they are installed. Unless there’s a reason not to update, that’s where I’d start.

MacOS: How to Upgrade

Restarting will probably also free up that space you’re currently seeing move to “other” when deleting files.

Thanks guys! I used “Clean My Mac 3” to remove nearly 500 GBs of GoPro videos.

I had copied them to my external hard drive and then I deleted them from iPhoto and iMovie and from my hard drive but they were all still there listed under “Other”. I guess that all I was deleting was the thumbnail or icon of each GoPro file and not the file itself?

The “Clean My Mac 3” program found the GroPro files and allowed me to finally delete them.

I wonder why the programers make it so hard to delete files. To sell tech support? Oh well.