Parameter RAM

Parameter RAM (PRAM) is a small amount of random-access memory with a battery as a backup power supply for the storage of system parameters (desktop pattern, selectable memory configuration, etc.) in a Macintosh computer when it is turned off or unplugged.. Accessed 2021-04-09.
On more recent Mac models, nonvolatile random-access memory (NVRAM) may be used, which does not require backup power. If this memory becomes corrupted, it may interfere with proper operation of the computer. NVRAM or PRAM can be reset by holding down   OPTION + COMMAND + P + R   for at least 20 seconds upon starting up the computer.About the PRAM and NVRAM in macOS, Indiana University Knowledge Base. 2019-03-29.
==Videos==
🛠️🍏🔋Mac Mini A1283 - PRAM Battery Replacement
Mac Mini A1347 - PRAM Battery Replacement (2010-2012)
PRAM Battery Replacement - Mac Mini 2014 - 2017 (A1347)
==References==
==See also==
*System management controller
==External links==
*Reset NVRAM or PRAM on your Mac at Apple Support (2020-11-17)
*
*NVRAM and PRAM at TechTerms
* at Wikipedia
Category:Components
Category:Technical terminology