I just recently got a macbook pro and for the past two months I have been getting this alert that says your start up disc is full. I have pictures on here but not enough to create a storage issue (I took it to the geek squad and they told me that). The geek squad recommended I delete everything and reformat but I am hoping not to do that. Any idea what could be taking up so much space. Additionally I have had the white screen after start up issue. I have been able to hit the option-command-p and q button to solve this but not sure if these two issues could be tied together.