I rebuilt a system with multiple partitions on the system/boot drive. Since I had other data on the drive I did not delete all the partitions. However, when I tried to re-enable BitLocker I was not able to. It appears that the recovery partition was causing issues. For the resolution I followed some of the steps in https://superuser.com/questions/667409/problems-enabling-bitlocker-on-surface-pro-with-windows-8-1/957256#957256, namely reagentc /enable.