Change OSX encryption filevault password to match login pass When I first setup my OSX laptop, my filevault and user login password were the same. At bootup, I only had to login once (with my username and password). 

I recently changed my OSX password but my filevault / disk encryption password was not changed. Now I have to login twice when I boot up (first with my old pass, then with the new one). 

Is there any way to change the disk encryption password so I can be in sync with my login password?

I tried Disk Util > File > Change Password, but it is greyed out.
Just bumped into this issue too, if you change password via 


  Settings > Users &amp; Groups > Change Password ...


you will be prompted twice, once for the File Vault original password and again for the new account password.  However if you change the password via 


  Settings > Security &amp; Privacy > Change Password ...


both will be updated, noting that you will be required to enter the account password not the File Vault original password, so you can reset the File Vault password by entering your new password three times.