A dynamic disk is a physical disk that provides features that “basic” disks do not, such as support for volumes spanning multiple disks. Such a disk contains dynamic volumes—such as simple volumes, spanned volumes, striped volumes, mirrored volumes, and RAID-5 volumes. Note that dynamic disks are not supported on notebooks or in XP Home Edition. This hack is for converting a FireWire disk to a dynamic disk.
Navigate to:
HLM\System\CurrentControlSet\Services\Dmadmin\
Parameters
Create a new DWORD value here called EnableDynamicConversionFor1394 if it doesn’t exist, or if it does, modify the existing value. 0 is the default value; set it to 1 to enable the conversion to a dynamic disk. You may need to restart or log out for the change to take effect. Do not convert FireWire disk drives to dynamic disk drives if they will be moved to other hosts.
