The system volume must be at least 1.5Gb in size and must be created before proceeding with the Bitlocker Drive Encryption process. This volume can be created either by using unallocated space on a drive, taking space from an existing volume, or merging multiple smaller volumes to create a single volume. In order to ease the process of creating the system volume Microsoft provides a tool called the ''Bitlocker Driver Preparation Tool''. This tool may be downloaded from the [http://www.microsoft.com/downloads/details.aspx?FamilyID=320b9aa9-47e8-44f9-b8d0-4d7d6a75add0&displaylang=en Microsoft website].

The system volume must be at least 1.5Gb in size and must be created before proceeding with the Bitlocker Drive Encryption process. This volume can be created either by using unallocated space on a drive, taking space from an existing volume, or merging multiple smaller volumes to create a single volume. In order to ease the process of creating the system volume Microsoft provides a tool called the ''Bitlocker Driver Preparation Tool''. This tool may be downloaded from the [http://www.microsoft.com/downloads/details.aspx?FamilyID=320b9aa9-47e8-44f9-b8d0-4d7d6a75add0&displaylang=en Microsoft website].