Thank you Radium, for the post and those 2 marks of punctuation 😊
Have you tried to reset the nvram ?
For those who know this trick, can it be done at each boot without damaging or compromising anything?
Since you guys mentionned some security related issues during the boot sequence, I have found some leads :
Disabling System Integrity Protection
As mentioned in the glossary, SIP functions as a method of system protection.
Apple describes it as follows:
Before Apple implemented SIP, any software that was granted root access (by the user entering her/his password) could modify/edit system files. Generally, a user shouldn't disable SIP unless there's a specific reason. That said, there are plenty of reasons to disable SIP, such as certain boot managers or for unsupported hardware cases. SIP can always be re-enabled.
Disabling Secure Boot
Disabling Secure Boot on the 2019 Mac Pros is generally a common behavior as the only volume the Mac Pro will boot off of is the factory SSD if you do not enable the SSD. You cannot remove the Apple-provided SSD(s) and still boot regardless if Secure boot is on or off.
What do you think? Could there be anything useful here?