Storage space too low - does not compute

[stix666]

I am trying to install windows in bootcamp on my late 2018 Mac mini 128Gb model.
Bootcamp has an error stating not enough disk space
Cmd-I on the HD shows 38Gb free
Cmd-I on the folders on the HDD (Users, System, Library, Applications) shows around 46.5 Gb used.

So why is it only showing 38Gb free?

 

[DeltaMac]

There are a lot of hidden folders used by the system.
You can see (most of) those folders by pressing Shift-Command-. (period)
Press the same keys to re-hide those folders.
DON'T just randomly remove files from those hidden folders, just remember that there are many more files than those that are usually visible to you.

 

[stix666]

Just figured that on one of the accounts, there's a large photo library (>40Gb) that doesn't get counted unless I'm logged into the account.

 

[Spectrum]

There are a lot of hidden folders used by the system.
You can see (most of) those folders by pressing Shift-Command-. (period)
Press the same keys to re-hide those folders.

Cool tip!

 

[Partron22]

Get a second drive for those big file collections.
A 500gB SSD in USB caddy should run under $150.
For pix, music, and video that you are not editing, a spinner HD is just fine. Those run around $70 for 2tB.
You are going to run out of space on thaf 128gB USB stick of a drive you've got. The sooner you do something to fix that, the happier you will be.