for etresoft: Thank you for your time and concerns. Let me reassure you: my organisation is extremely simple and SOLID.
So:
I have one internal SSD with ALL applications and SYSTEM stuff. and ONE “System Admin user”, called “Mackie”, whose only purpose is when need to ADD a new application or update/upgrade the system.
I have one external SSD with ALL data files and ONE USER called “Sono” who formatted that disk. And which more than 200 000 files (two hundredth thousands, that’s, I think, “200,000” for US Americans) and many thousand of folders all bearing a clear, unambiguous name. I only use LIST view, and each folder, depending on its use, is shown sorted by 7 COLOR LABELS, MOD. DATE and/or ITS NAME.
In other words, I’m using Sono ±99,97% of the time.
As for another vaste list of reasons I don’t use Time Machine but have several other external devices where I put backups on.
The only reason to have a TEST user was to find out about the inconsistency of the default file security which I now know, has its reason.
The fact that (1) BY DEFAULT all disks are NOT private and (2) do NOT have an owner and (3) that you have to MANUALLY indicate which is the owner, (4) to propagate it to its content and (5) to give NO ACCESS to everyone else, is, in my view, a severe security leak. But hey: who am I?
Thus, dear, etresoft, don’t worry, as I DO NOT want to share files amongst users, as I have no need for it.
I know my way of working if different from most users, and I take full responsibility of it.
And please, dont’t ask me why. It’s just far too complicated (and extremely long) to justify.
BUT, and now comes the delicate part, do not tell me that IT IS NORMAL that Sono as the OWNER of the whole disk and CREATOR af each and very file irregularly receive errors (which I call LIES, how would YOU call them?) telling him HE IS NOT THE OWNER or telling him the VOLUME DOES NOT SUPPORT PERMANENT VERSION STORAGE, which is disregarded some seconds (or minutes) later!
Since I’m using Sonoma, I receive other strange error messages… upon each start up:
• The application Finder can't be opened.
• The application “Firefox.app” can’t be opened.
Doesn’t this make you wonder if they ever tested it?!??
(I’ve lost the “The application Finder can't be opened” error message)
I was spammed several times each and every day, by messages telling me an update will be performed later that day… which never occurred despite the fact I didn’t shut down for more that a week, you may understand why I finally wanted to do it manually.
[having endured the worst system degradation starting in ±2018 (where I kept El Capitan for another bunch of extremely good reasons) up to March 2023, by NOT upgrading, I nowadays don’t wait too long before upgrading]
So let’s close this issue, unless you know why macOS becomes less and less consistant?
(I’ve now the INSIDE MACINTOSH era, where EVERYTHING WAS CONSISTENT, EASY AND USERFRIENDLY. It degraded around mid-2010 and I can give some hard examples)
Have a nice day…