Resubmit of EtreCheck report of HD issue (I can't explain)

Not to worry. Thanks to Ferd II, I can now see your report and am going over it. At initial glance, it appears that your iMac is configured with a Fusion Drive. Apple provided this option with a number of their desktops starting a few years back. These drives are actually a combination of a single HDD & a single SSD. These show up as disk0 (HDD) & disk1 (SSD) in your report.

The additional drives are a result of the Fusion drive being "reformatted to APFS" when, either or both, you upgraded your iMac to macOS Mojave, and subsequently to macOS Catalina and/or macOS Big Sur. These versions of macOS use APFS-formatting of the system drive ,,, and specifically for the Fusion drive, the following may shed some light about this:

• Fusion Drives in APFS - The Eclectic Light Company

The other issue, I see from the report, is that you should avoid using "cleaner" apps. These tend to cause more issues that resolve them and we see numerous posts here with folks asking for help on removing them (after the damage has been done.) As such, I strongly suggest you completely remove CleanMy Mac from your iMac.

You've installed what most of the experienced contributors to these forums consider to be akin malware, CleanMyMac. There is no reason to ever install or run any 3rd party "cleaning", "optimizing", "speed-up", anti-virus, VPN or security apps on your Mac.  This user tip describes what you need to know and do in order to protect your Mac: Effective defenses against malware and other threats - Apple Community. Uninstall it according to the developer's instructions.

You can check to see if you've removed all of the supporting files by downloading and running Find Any File to search for any files with the application's name  and the developer's name in the file name.  For CMM software you'd do the following search(es): 

1 - Name contains cleanmymac

2 - Name contains macpaw

Any files that are found can be dragged from the search results window to the Desktop or Trash bin in the Dock for deletion.

FAF can search areas that Spotlight can't like invisible folders, system folders and packages.  

You also have a number of extensions for Safari for ads. One is enough. Pick one and remove all of the other, Adguard, Ad And Stuff Blocker, Minimal Consent, for example.

Sorry, but the EtreCheck report you submitted cannot be opened. Please review the following User Tip article on how you can properly submit it to this forum.

• Using EtreCheck to Troubleshoot Potential… - Apple Community

  2020-11-10 CleanMyDrive 2 (2.2.0)

Add that to the list of troublemakers to avoid.

If there is a useful app with "clean" in its name I don't know of one. As a category, all so-called "cleaners" "doctors" and so forth are scams. That applies to Macs and PCs alike.

Big chunks of the report are missing from the screenshot version. Trying to post the complete version I copied from FireFox:

EDIT: I used the proper technique a nd it's still not opening in Safari. It's a forum bug; OP did not mispost. You'll need to access with a different browser.

Tesserax wrote:

Sorry, but the EtreCheck report you submitted cannot be opened. Please review the following User Tip article on how you can properly submit it to this forum.

Sorry about that. It looks like anything non-ASCII in a report will cause the forum software to choke. That last entry in the "Installs" list seems to be the culprit. I will have to try to detect and sanitize those.

Ferd, I have the same issue as Tesserax, and it's gone on for several months. I think is is a forum bug. Some Etrecheck reports post as a Safari attachment and, for some crazy reason, only open in FireFox. Problem is all my ASC bookmarks are in Safari.

Nothing to be sorry about. You have provided us with an excellent troubleshooting tool and I am very grateful for your efforts to provide it to us. It has made my "job" of helping folks here at the ASC far easier in diagnosing their systems accurately ... and remotely.

I don't understand how a machine can stay "clean" and free from "disease" without using some sort of program.

That ability lies at the heart of macOS itself. Why would Apple design something so crippled it would need that sort of help? They don't.

I can see the report:

You are welcome. I expect that Tesserex will be able to provide some assistance with the screenshots I provided.