Hardware: Hackintosh running Mavericks.
Problem: I had a DMG where I store (stored...) stuff I obviously wanted to keep private, so I unchecked the "Save in my keychain" option.
Some weeks ago, beginning to upgrade all my passwords (iPad, phone etc) to something less crackable (like the 6-digit iPhone lock screen) I changed the password of said DMG to a very long new one. I did it following the instructions in Disk Utility.
Yesterday I tried to open it but it said "Try again" a few times until the "Authentication error" window appeared.
I'm very careful with passwords and they are always stored. When I change them I keep the previous one, etc. But I might have screwed this one up because neither password works.
What I did after the change is rename the DMG with a password hint. But when it wouldn't open, I renamed it back to its previous name. Nothing worked.
And since I am thorough with backups too, I updated both backups with the new DMG... so none of them work...
Now the central question: since I did all this on my desktop computer, could I overcome this with some kind of log file, or anything of the sort stored somewhere in my drive? Of course I have full admin access. I took it to my Macbook running Catalina but no luck there either.
Thanks to all !