The disk is a properly formatted SATA disk partitioned as per the guide and NTFS file system. Bitlocker check performs fine after reboot then the status reports needs conversion. \n\nI am slightly confused as the exact same procedure works fine on an IDE disk. The only difference between the two setups is one is SATA and the other is IDE ??\n\nI've seen quite a few posts regarding BSOD and SATA, could this be another SATA vista problem?