Returns the index of a hard disk device.
PRL_RESULT PrlSrvCfgHdd_GetDiskIndex( PRL_HANDLE hHardDisk, PRL_UINT32_PTR pnIndex );
PrlApiDisp.h
PRL_RESULT. Possible values:
PRL_ERR_INVALID_ARG - invalid handle or null pointer was passed.
PRL_ERR_SUCCESS - function completed successfully.