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Non-volatile random access memory; RAM that doesn't lose the stored information when the power is turned off, unlike traditional RAM
4
votes
How to find out whether NVRAM was reset?
You could try this method which will perform a side-by-side diff of the contents of NVRAM prior to running a nvram -c. … For example:
$ sdiff <(nvram -xp) <(nvram -c &> /dev/null; nvram -xp) | less
If there's any changes you should see lines with vertical bars (|) which will denote lines that changed. …