Andrew,
thanks for the reply.
[Please forward my response to Katherine, with whom I chatted this morning.]

See screenshot attachment.

I am running CleanMyMac. Upon running one of the packages, Clean My Mac immediately notified me that my disk was almost full.
In fact, the OS manages the space, as needed! I have a 1 TB drive which had ~700 GBs of free space this morning, so clearly I had plenty of room!

Then, I forgot that the DMG file did NOT open an install program but only mounted a drive, which held the install program! (my Finder was too small for me to notice the newly mounted file.)

So, after a FULL install of the UltraPak, I'm now down to 588 GBs, which is why I purchased my new MacBook with a 1 TB drive!

Life is good, even in COVID-land! LOL
Mark

Attached Files (Click to download or enlarge) (Only available when you are logged in)
New Mount - Disk NOT Full.png (1.46 MB, 3 downloads)