Reeds in a dyke

I stayed at home today to do office work and ended up with two bin bags of paperwork to throw out.  The office still looks pretty crammed but at least everything is in order and I know where it all is.  I managed to get out for half an hour's walk around the fields.  The El Capitan operating system has been loading all day and is now ready to install.  I have done quite a bit of research as to how I can retrieve photos if it screws them up.  I have backed up everything so fingers crossed, here goes!