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Pre-boot recovery options–Enable to set the recovery message or customize the URL provided on the pre-boot key recovery screen when the operating system drive is locked.TPM startup key and PIN–You can require both a startup key and a PIN.
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When this USB key is inserted into the device, access to the drive is authenticated and the drive is accessible. A startup key is a USB key with the information to encrypt the drive. TPM startup key–You can require users to authenticate with a TPM startup key to access a drive.You can also configure the minimum PIN length. TPM startup PIN–You can require a 6-digit to 20-digit PIN to be entered before startup.Configure TPM startup without a PIN or key–You can require TPM as startup authentication instead of a PIN or key.Allow BitLocker without a compatible TPM–Check the box to require either a password or a USB drive is required for startup.Additional startup authentication–Select whether BitLocker requires additional authentication each time the computer starts and specify if you’re using a Trusted Platform Module (TPM).Encryption option for system drives–Select the encryption method and the cipher strength of the key for operating system drives.
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