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fdesetup:tldr:2fec4
The command "fdesetup status" is used to check the status of FileVault, which is a disk encryption program used on macOS.
When you execute the "fdesetup status" command in the Terminal, it will display information about the FileVault encryption status on your Mac. The output of the command can have the following meanings:
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FileVault is On: This indicates that FileVault is enabled and actively encrypting your disk. It means that your data is protected by encryption and will require authentication to be accessed.
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FileVault is Off: This means that FileVault is currently turned off on your Mac. Your disk is not encrypted, and your data may be vulnerable if your device is lost, stolen, or accessed by unauthorized individuals.
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FileVault is On but decryption has been requested: This message suggests that the decryption process for FileVault has been initiated but is still in progress. If the decryption completes successfully, the status will change to "FileVault is Off."
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FileVault is Reverting: This status indicates that the encryption on your disk is being reverted, meaning that the decryption process is underway. The decryption process can take some time to complete.
The "fdesetup status" command is useful for quickly verifying the current encryption status of your Mac's disk and ensuring that your data is adequately protected.