Parallels disk parameters.

struct __PRL_DISK_PARAMETERS {
  PRL_UINT32 m_Heads;
  PRL_UINT32 m_Cylinders;
  PRL_UINT32 m_Sectors;
  PRL_UINT64 m_SizeInSectors;
  PRL_UINT32 m_BlockSize;
  PRL_UINT32 m_Parts;
  PRL_IMAGE_PARAMETERS_PTR m_Storages;
  PRL_GUID Uid;
  PRL_CHAR_PTR Name;
  PRL_UINT32 m_LogicSectorSize;
  PRL_UINT32 m_PhysSectorSize;
};