What is osv and fdv?

BitLocker Encryption Options and BitLocker Drive Encryption Control Panel items. Set FVE FDV group policy registery key to escrow recovery password. In my account, there were two BitLocker recovery keys, one for Drive "FDV" and another for Drive "OSV". OSv (stylized OSv) is a cloud computing focused computer operating system released on September 16, 2013. The auto-unlock works automatically for SATA, eSATA, PATA and SCSI only, since BitLocker sees these as "fixed data volumes" (FDV).