mount network drive on boot in fstab

nano /etc/fstab

Spacing really matters:

//192.168.0.15/media  /mnt/media  cifs  username=guest,password=,iocharset=utf8  0  0

This doesn't work:

#//192.168.0.15/media  /mnt/media  cifs username=guest,password=,iocharset=utf8  0  0