If your MacBook Pro M4, which is likely equipped with an Apple Silicon chip like the M1 or M2, does not reset its NVRAM automatically, you can try a few troubleshooting steps. Apple Silicon Macs typically reset NVRAM during startup if issues are detected, but you can manually intervene if needed.
Understanding NVRAM Reset on Apple Silicon Macs
Apple Silicon Macs, such as those with M1 or M2 chips, do not require manual NVRAM resets like older Intel-based Macs. Instead, they automatically check and reset NVRAM during startup if necessary. However, if you suspect issues, you can try a few methods to ensure your Mac is functioning correctly.
Steps to Troubleshoot NVRAM Issues
1. Restart Your MacBook Pro M4:**
- Simply restarting your MacBook can often resolve minor issues. Go to the Apple menu in the top left corner of your screen and select "Restart." This is the simplest way to ensure your Mac checks and resets NVRAM if needed.
2. Shut Down and Power On Again:**
- If a simple restart doesn't work, try shutting down your MacBook completely. Wait for about 10 seconds before powering it back on. This can help reset some low-level settings.
3. Reset NVRAM via Terminal (Advanced):**
- Although not typically necessary for M1 or M2 Macs, you can reset NVRAM using the Terminal app. This method is more commonly used for troubleshooting specific issues.
- Open the Terminal app on your Mac.
- Type `sudo nvram -c` and press Enter.
- Enter your password when prompted.
- Then, type `sudo shutdown -r now` and press Enter to restart your Mac.
- This method will clear NVRAM settings, but some variables like those related to "Find My Mac" might not be cleared due to security features[7].
4. Check for Updates:**
- Ensure your MacBook is running the latest version of macOS. Sometimes, software updates can resolve issues related to NVRAM or other system settings.
5. Contact Apple Support:**
- If none of the above steps resolve your issue, it might be worth contacting Apple Support for further assistance. They can provide more specific guidance or recommend a visit to an Apple Store for a thorough check.
Additional Considerations
- External Devices: If you're using external devices like monitors or network adapters, try unplugging them before attempting a reset, as they might interfere with the process[7].
- Firmware Passwords: If you have set a firmware password, it might prevent the NVRAM reset from working properly. You would need to disable this password before attempting a reset[2].
By following these steps, you should be able to troubleshoot and potentially resolve NVRAM-related issues on your MacBook Pro M4.
Citations:[1] https://nordvpn.com/blog/mac-reset-nvram-pram-smc/
[2] https://www.easeus.com/computer-instruction/nvram-reset-not-working.html
[3] https://discussions.apple.com/thread/251414375
[4] https://www.youtube.com/watch?v=AQ94I4UaTEg
[5] https://support.presonus.com/hc/en-us/articles/4406546454669-How-to-reset-NVRAM-on-a-Mac
[6] https://9to5mac.com/how-to-reset-macbooks-and-macs/
[7] https://www.reddit.com/r/MacOSBeta/comments/lekky6/m1_macs_how_to_reset_the_nvram/
[8] https://discussions.apple.com/thread/251609330
[9] https://eshop.macsales.com/blog/80731-how-to-reset-mac-nvram-smc-or-pram/