I didn't tell you that I have installed windows 8 again for the following reason:
I having already windows installed I tried to install SL and I got error because I wasn't able to install SL in free disk space. The only way that I was able to install SL was when I had to delete all partitions and I had to do a new partition, but for this reason I lost windows. I had partitionated hard disk but it wasn't possible install in any of these partitions. It wasn't possible format to OsX installation . After I tried install windows from SL but I got a error when I had to select a disk where I liked to install Windows. It didn't let me to install windows. I had to do gparted to create a new partition, previously I had to delete partition information, and so I lost SL installation.
For this reason I don't have SL now. I need to know how I could install SL, having already installed windows and without it is going to lost
Thank you for your attention