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Explainer: Non-Volatile RAM (NVRAM) – The Eclectic Light ...
https://eclecticlight.co/2022/01/22/explainer-non-volatile-ram-nvram/
The NVRAM contains settings for: sound output volume, display configuration, startup volume (disk), any recent kernel panic, to enable a kernel panic log to be constructed, other model-specific features. If you’re curious, NVRAM contents are listed in System Information under Software > Logs > NVRAM contents. Alternatively, you can use the shell command
NVRAM/PRAM: How to Reset & When Should You Use It …
https://iboysoft.com/wiki/nvram.html
The setting information stored in NVRAM varies from your Mac model and its connected devices. But usually, the settings are related to startup disk selection, recent kernel panic, display resolution, sound volume, time zone. And it's worth noting that NVRAM is the updated Mac terminology for PRAM (Parameter random-access memory).
What Is NVRAM, and When Should I Reset It On My Mac?
https://www.howtogeek.com/284948/what-is-nvram-and-when-should-i-reset-it-on-my-mac/
If you want to reset your NVRAM, there are two main methods. The first (and most reliable) method starts with shutting down your computer. Next, hit the power button. As soon as you hear the startup sound, press and hold the Command, Option, P, and R …
Reset and maintain your SMC and NVRAM - The Eclectic …
https://eclecticlight.co/2019/11/18/reset-and-maintain-your-smc-and-nvram/
Non-Volatile Random-Access Memory (NVRAM) NVRAM, formerly Parameter Random-Access Memory or PRAM, stores some key settings which your Mac cannot obtain from disk during startup. Apple explains it in a separate article about NVRAM. The NVRAM contains settings for: sound output volume, display resolution, and sometimes other display settings,
The Lag in Boot Chime Volume Adjustment based on …
https://github.com/acidanthera/bugtracker/issues/971
As this has been noticed as an issue with 48kHz sampling for Boot chime due to ALC295 default sampling rate at 48kHz (not 44.1kHz). Where we suspect this may lead to a lag in decoding it and applying NVRAM SystemVolume value. The issue description is here: The change in macOS preference will overwrite NVRAM once NVRAM works natively (mine works). So with …
What Is NVRAM on a MacBook? - Your Business
https://yourbusiness.azcentral.com/nvram-macbook-9904.html
The NVRAM stores information, such as speaker volume, display settings and EFI boot data, which determines your startup disk location. For example, the …
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