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TOPIC: RFI: option to release "purgeable" disk space

RFI: option to release "purgeable" disk space 04 Nov 2019 02:41 #11497

Is there an option on TeTool Pro to release the purgeable disk space? (I could not find it.)
If not, would you consider adding it?

On a MacBook Pro with only 128 GB SSD I could not use App Store to update Xcode (~12 GB) even though I had about 36 GB available disk space, but over 18GB of it was "purgeable." Apparently, the installer cannot use the purgeable disk space and I have reported this to Apple as a bug. I could not find an option to free the "purgeable" and creating an empty large file would not do that. I was able to free the space with shell commands to fill 36GB file with random data, remove it, and then run the update to Xcode.

$ head -c 36000000000 < /dev/random > ~/Downloads/myfile
$ rm ~/Downloads/myfile

Also, do you have a description of how MacOS uses "purgeable" disk space?
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RFI: option to release "purgeable" disk space 04 Nov 2019 04:10 #11499

There is no feature in TechTool Pro that deals with purgeable disk space. The relevant tools are built into the operating system.

The Storage pane of About This Mac is treating space occupied by purgeable files as free space, because it is potentially free space, because the files could be purged.

See also:

How to free up storage space on your Mac - Apple Support


macOS: What is Purgeable Storage on Your Hard Drive?

You can find other relevant articles by searching for:

Optimize Mac Storage
MicroMat Inc
Makers of TechTool
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