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Apple support document on turning off secure boot: https://support.apple.com/en-us/HT208198 https://support.apple.com/en-us/HT208198

jackjeff 6y ago
Does it work the same for M1 Macs? Because the documentation only mention Intel CPUs with T2 chips.
- lstamour 6y ago
  Okay I just went and took a look... Indeed it doesn't show the same options. This is what I saw when I went to Startup Security Utility: (*) Full Security: Ensures that only your current OS, or signed operating system software currently trusted by Apple, can run. This mode requires a network connection at software installation time. ( ) Reduced Security: Allows any version of signed operating system software ever trusted by Apple to run. [ ] Allow user management of kernel extensions from identified developers [ ] Allow remote management of kernel extensions and automatic software updates There's no option to turn on or off a firmware password, instead I had to login with a local administrator account first before I could access anything under recovery options. There doesn't appear to be a way to set "No Security" as an option either. At least from the GUI. Maybe it's possible from Terminal somewhere. But it seems unlikely or undocumented for now. Edit: Here's the Apple documentation on this: https://support.apple.com/en-us/guide/mac-help/mchl768f7291/mac https://support.apple.com/en-us/guide/mac-help/mchl768f7291/... Regarding kernel extensions, there's also https://support.apple.com/en-us/HT210999 https://support.apple.com/en-us/HT210999 and https://support.apple.com/en-us/HT211860 https://support.apple.com/en-us/HT211860 Regarding macOS Recovery, there's https://support.apple.com/en-us/guide/mac-help/mchl82829c17/mac https://support.apple.com/en-us/guide/mac-help/mchl82829c17/...
  - saagarjha 6y ago
    It's possible through the GUI, although it's convoluted and I think you first need to disable SIP? I am sure bputil should be able to do it as well.
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jackjeff 6y ago

Does it work the same for M1 Macs? Because the documentation only mention Intel CPUs with T2 chips.

lstamour 6y ago
Okay I just went and took a look... Indeed it doesn't show the same options. This is what I saw when I went to Startup Security Utility: (*) Full Security: Ensures that only your current OS, or signed operating system software currently trusted by Apple, can run. This mode requires a network connection at software installation time. ( ) Reduced Security: Allows any version of signed operating system software ever trusted by Apple to run. [ ] Allow user management of kernel extensions from identified developers [ ] Allow remote management of kernel extensions and automatic software updates There's no option to turn on or off a firmware password, instead I had to login with a local administrator account first before I could access anything under recovery options. There doesn't appear to be a way to set "No Security" as an option either. At least from the GUI. Maybe it's possible from Terminal somewhere. But it seems unlikely or undocumented for now. Edit: Here's the Apple documentation on this: https://support.apple.com/en-us/guide/mac-help/mchl768f7291/mac https://support.apple.com/en-us/guide/mac-help/mchl768f7291/... Regarding kernel extensions, there's also https://support.apple.com/en-us/HT210999 https://support.apple.com/en-us/HT210999 and https://support.apple.com/en-us/HT211860 https://support.apple.com/en-us/HT211860 Regarding macOS Recovery, there's https://support.apple.com/en-us/guide/mac-help/mchl82829c17/mac https://support.apple.com/en-us/guide/mac-help/mchl82829c17/...
- saagarjha 6y ago
  It's possible through the GUI, although it's convoluted and I think you first need to disable SIP? I am sure bputil should be able to do it as well.

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