ASM

DISK I/O

Find the special system folders

Try this:

'
' Available Folder types.... Where
' -----------------
' _kSystemFolderType System
' _kDesktopFolderType DeskTop
' _kTrashFolderType Trash Can
' _kWhereToEmptyTrashFolderType ???
' _kPrintMonitorDocsFolderType Print Doc's
' _kStartupFolderType Startup
' _kAppleMenuFolderType Apple menu items
' _kControlPanelFolderType Control Panels
' _kExtensionFolderType Extensions
' _kPreferencesFolderType Preferences
' _kTemporaryFolderType Temporary
'
CLEAR LOCAL
LOCAL FN GetSysFolderVol(type&)
  DIM pBlock;128
  DIM pBlk&
  DIM Create%
  DIM Drive%,DirID&
  DIM ourVref%
  LONG IF type& = _kTemporaryFolderType
    Create% = _KCreateFolder
  XELSE
    Create% = _kDontCreateFolder
  END IF
  LONG IF FN FINDFOLDER (_kOnSystemDisk,type&,Create%,Drive%,DirID&) = _NoErr
    pBlk& = @pBlock
    pBlk&.ioVRefNum% = Drive%
    pBlk&.ioWDDirID& = DirID&
    IF FN OPENWD (pBlk&) = _noErr THEN ourVref% = pBlk&.ioVRefNum%
  END IF
END FN = ourVref%

I've only used it to get the prefs folder myself...
I'll be using it soon to get the startup folder too.