MP 1,1-5,1 MacPro5,1: BootROM thread | 144.0.0.0.0

[tsialex]

I have a question that has almost certainly been posed and answered a number of times but 20 minutes with the search tool has failed to turn it up; sorry to be redundant.

@tsialex rebuilt the BootROM file for my 5,1 (2011, 2x3.46GHz, 32GB) back in 2022 and, lamentably, I am just getting around to doing my first BootROM reflash; time just seems to flow like water through a millrace. My question:

When starting ROMTool, it admonishes me to turn off SIP and explicitly instructs me to boot using the Recovery partition or an installer USB drive in order to access Terminal and issue the "csrutil disable" command. I am wondering why this is necessary, rather than issuing the command from Terminal, while booted normally, and then rebooting.

Again, sorry to be redundant; I will, of course, go ahead as instructed but I would like to know why. As Rudyard Kipling said, "The motto of the mongoose family is 'Run and find out' ...

Thanks and Best Wishes to All

You can only disable SIP from Recovery or booted from macOS installers. Apple way to enforce security.

 

[Valdaquendë]

I appreciate your time and energy, Borowski; thanks. But what I wanted to know was "why?".

Thanks, tsialex; I appreciate it. And thanks for the excellent work rebuilding my BootROM file and the files of so many others, as well as your invaluable help with so many other issues.