Other Users & Shared taking up 318GB on my internal drive!

Apple’s Storage display tries to group data by category, and usually fails. Most people have a large, unexplained value for “System Data”. This is the first time I’ve seen a problem with “Other users & shared”.

The most likely explanation is 3rd party software that creates its own user. This is common for traditional Unix software, but rare for macOS. The only Mac app that I know that does this is the PostgreSQL database server.

"Other Users & Shared taking up 318GB on my internal drive!: [...]Other Users & Shared taking up 318GB![...]"

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Thanks for the screenshot.

Unkown Space Taken Up:

I'm seeing 6 volumes. So, it's as if it is partitioned, into separate volume. So, you might be able to delete them --but, do that and its all gone. Is Boot Camp used here.

1. Go Here: Add, delete, or erase APFS volumes in Disk Utility on Mac - Apple Support
2. Scroll to: Erase an APFS volume
3. As it Rads: When you erase a volume, all the data on the volume is permanently erased, and the empty volume remains in the container.

View Disk Utility in Recovery Mode:

So, booting into Recovery Mode, and then clicking Disk Utility, does it look any different?

Screenshot of Top-Right Corner on Second Image:

“Hey thanks, TheLittles. You got a good eye. I missed that detail. I'm not running boot-camp on this machine. I'll try editing the drive in safe mode, but I don't see any other volumes. But, I'll backup everything and probably reconfigure from scratch.”

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You are welcome.

Getting your Items Back:

If you start from scratch, use Time Machine Backup. Then, use Migration Assistant to get items off of the backup file.

As for apps, you may need to reinstall third-party apps. When my Mac crashed oh not so long ago, I contacted the Developer, and they gave me a new License Key, telling me that it belongs to me. So, ask them for a new key -that’d be their call.