I have used bitlocker to encrypt the entire drive of my laptop. It has a TPM chip ans so does require me to enter a passkey at boot up time.
I set up bitlocker because I was concerned that if I lost or had my laptop stolen it would expose confidential data. I have used truecrypt on the past and that software asked for a passkey at startup.
I understand hoe encryption protects my data but am still unsure how bitlocker prevents someone else accessing my data without asking me for a passkey of some kind?
Am I missing something?