First, MP4,1/5,1 don't have PRAM, let's stop using wrong terminology.does this actually mean anything?
its there, but does it have any effect and can it be cleared by PRAM?
just mentioning this because its easy for people to get fear mongered into things that might not actually mean anything especially if people dont understand what they are looking at
Clear NVRAM don't remove MemoryConfigs. The first and more common adverse effect is not recognising DIMMs speed, but this can be resolved with a 3-step clear NVRAM forcing reconfiguration of the DIMMs.
The real problem is space occupied, all these entries not being removed plus IASInstallPhaseList and SecureBoot certificates are making the NVRAM full, it's just 64KB.
Some Mac are now incapable of even changing the boot disk, it's the most common noticed collateral effect. Other problem is not being capable of setting up the NVRAM setting of NVIDIA web drivers.
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