How to check the macOS FileVault key?


Sometimes, you have written your FileVault recovery key, but you are note sure is the key is the good one.

Open one Terminal console here: Applications> Utilities > Terminal

Use the fdesetup command with root privileges.

When the key is correct you should have the result true:

% sudo fdesetup validaterecovery
Enter the current recovery key:
true

When the key is wrong you should have the result false:

% sudo fdesetup validaterecovery
Enter the current recovery key:
false

If the key does not have a good format, you will have one the error Not a valid recovery key:

% sudo fdesetup validaterecovery
Enter the current recovery key:
false


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