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sglee

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BitLocker - Purpose of creating Password and Recovery Key

Hi,
 
 What is the purpose of creating both password and Recovery key during encryption process?
 After writing down the password and encrypting my USB flash drive, I took it off the computer and plugged the flash drive into another computer.
 It only asked for the password to access the contents of the flash drive, not both password and Recovery key,

 When I took the encrypted hard drive (that has OS) out of the computer and attached it to another PC, it asked for the recovery key and I entered it manually. Then the computer started loading OS on the hard drive(encrypted in another computer).

 Can someone explain why in one case it prompts for the password and another case it prompts for recovery key?
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sglee

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so the reason this computer only asked for the password (when I plugged encrypted flash drive) was because it has TPM installed? (In fact it has TPM.  I entered tpm.msc and it came up).
So if this computer did not have TPM installed, would it have prompted me to enter Recovery key?
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I plugged this flash drive to three separate PCs with XP OS. They all displayed a popup window saying "Do you want to format the drive?".
So I bring it back to my Windows 7 PC (not the original PC where I encrypted the flash drive) and it asked for the password. When I clicked the link "I forgot the password", it asked for Recovery key.

Why XP PCs (they don't have TPM) reacts differently than my Win7 PC?
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@RichRumble
>...Which is why your required to enter the longer version of the password aka recovery key.
No. Even without a TPM present/in use the behavior is the same.
I didn't say that :p
-rich
:p Sorry :)