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VitoBotta

macrumors 65816
Original poster
Dec 2, 2020
1,004
402
Espoo, Finland
I am thinking to do a clean install to clean up things and am wondering if erasing all settings would be just as good?
 
The erase all contents and settings that is now in the System Preferences will wipe the read/write Macintosh HD data partition and preserve the System (read only) partition much like it does on iOS.

The difference with performing a clean install (where I presume you’d wipe the entire disk from disk utility before reinstalling macOS) is that a clean install would write a new System partition as well.

We have quite a few lesson Macs at work which have to be wiped after a certain time and the erase all contents and settings is of course much faster than manually clean installing them all. Works very well.
 
I gave this a whirl with nothing to lose and it has worked a charm. I understand that with my new Mac things are somewhat different as to OS , settings security, what is stored where etc. etc.

I had a read of some excellent articles before doing this to better understand what Mac are able and what this does.

Caveat. I had a pretty bad experience with migration assistant coming up from an earlier Mac. Several (4 or so) re install and migration assistant from time machine still left a clunky M1 that was about to attempt an orbit of the Earth via the immediate window. This worked for me, though I would not have bothered unless it was a mess.

I did back everything up though, even libraries as the lot goes. I figured I can drag back what I may need but so far not bothered.
It was also quick.
 
I had to re sync my photos library with the cloud that was on an external drive, that takes a lot of time. It is not something I would have done had my computer not been a mare. All my cloud stuff needed to be re signed in, all my settings and prefs were gone, software needed to be re downloaded, I am on unlimited broad band so not an issue, just time to sort out.
Again, if my puter was working OK, I would not have done it.
 
I had to re sync my photos library with the cloud that was on an external drive, that takes a lot of time. It is not something I would have done had my computer not been a mare. All my cloud stuff needed to be re signed in, all my settings and prefs were gone, software needed to be re downloaded, I am on unlimited broad band so not an issue, just time to sort out.
Again, if my puter was working OK, I would not have done it.

I usually do a clean install every year to kinda "restore performance" etc because I think that overtime clutter accumulates etc.
 
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