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My Mac "startup disk is almost full"

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Last Modified: 2017-12-23
I am not sure where to look to find what this disk contains and why it's almost full.

See attached error...

Mac Startup Disk is Almost Full
I have a 500GB SSD and have worried for months it was almost maxed out.

How can I find what files can be deleted for this startup disk not to max out?
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curiouswebsterSoftware Engineer

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Commented:
yes. It's empty.

When I delete a program that I no longer use, it is enough to simply delete it from Finder > Applications?

Or, like Windows, must I track down where that program was installed and blow away the folder?
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curiouswebsterSoftware Engineer

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Commented:
I followed your advice and emptied by Downloads, then Trash.

I do have many images, sadly, little music.

Images I am sad about since I have many many duplicates. I copy them in to various folders when I make a presentation. So, there are many images copies a handful of time.

Is there a solution to this short of redesigning my approach??
David FavorFractional CTO
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curiouswebsterSoftware Engineer

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Thanks for the picture idea. That would save lots of room.

I have another related question here...
https://www.experts-exchange.com/questions/29075231/How-to-see-combined-file-sizes-from-Mac-Finder.html

And thanks David for talking about "other users." I have Guest, but never use it and would like to remove it.

How much might that save? And how do I delete that user?

Also, "df:"revealed the following...

Screen-Shot-2017-12-23-at-4.39.59-PM.png
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curiouswebsterSoftware Engineer

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thanks
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Be careful with ccleaner.  They were hacked in the past and malware put into their program.
curiouswebsterSoftware Engineer

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Commented:
Wow!

Any good alternatives?

Commented:
ScriptAddict, be careful cholera killed 2/3 of the world population in the past.
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The last ccleaner hack was mid September of this year.  When was the outbreak you mentioned?  

Read up on it.  

Nothing will get everything.  As our defensive friend  is attempting to point out they will likely be extra careful for a bit.  

The best thing to do is to keep your important data on the cloud and reset your Computer to factory once a year.  Think of it as an oil change for your computer.  And you will spend less of your life troubleshooting obscure problems.

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Ccleaner has over 6000 updates. Oly once there was an issue with the 32bit free version for Windows, and the problem appears for those who had the update installed on the PC.
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Glad you got your Mac working better again.  Merry Christmas!
David FavorFractional CTO
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Yep. I'd think twice about cc-cleaner.

If you have many duplicate files, try DupeGuru running one pass for exact matches + a second pass for fuzzy matches (if you have many photos).

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