I have a MacBook Pro 2018 laptop with hard disk encrypted with FileVault and a recovery key set. It is an office laptop and I don't have the recovery key (which probably, the IT Admin has). I am looking to dual boot Windows with Bootcamp. However, from searching the internet, I found out that I have to decrypt the disk before proceeding. So,

  1. I want to able to partition the disk for installing Windows.
  2. I can decrypt and encrypt the disk again but, I don't want to change the old recovery key set for the disk.

I don't want to know the old recovery key. I just want the old recovery key to be still functional even after re-encryption. Is it possible?

Or alternatively, can I dual boot Windows without decryption? I've tried using VirtualBox to run a Windows VM but, it is incredibly slow and the CPU skyrockets to 300% with nothing running. So I guess that's ruled out. Also, I am running macOS Catalina 10.15.3

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