While installing Ubuntu I accidentally overwrote the boot sector that loaded Windows. One of my drives was encrypted using BitLocker Drive Encryption.
Ubuntu doesn't even show that drive. Is there some way I could open that drive on Ubuntu? Or do I have to install windows again or connect that drive to a Windows pc just to get the files from the drive??
Why don't you just try and recover the boot sector? You need to use
Windows to solve this problem, Ubuntu has never been able to read a
encrypted drive ( encrypted by BitLocker ) likely never will be able
What Ramhound told you is correct. Although there are highly technical operations using experimental software to accomplish this from GNU-Linux no reputable source that I'm aware of has published anything solid as of yet.