h6. [[OS SWI Calls]] h6(. » [[OS_FSControl]] h6((. » OS_FSControl 48 h2. OS_ FSControl 48 h5. (SWI &29) |_<^{width:4em}. Entry | | |<^. R0 |<^. 48 (&30) | |<^. R1 |<^. Pointer to name of object| |<^. R2|<^. New [[Filing System Option 4|boot option]]| |_<^{width:4em}. Exit | | |<^. R0|<^. Preserved| |<^. R1|<^. Preserved| |<^. R2|<^. Preserved| h4. Use The purpose of this call is to set the boot option for a disc or image. h4. See also * [[Filing System Option 4]] * [[OS_FSControl]]