My MBP crashed a week back so bought the new SATA drive Seagate Momentus and installed it. First I tried installing the OS X by holding the CMD + C button, but it didn't work, so finally tried the CMD + Option + P+R and it recognized the disc 1 and took me to OS X Installer screen. For recognizing the drive I used the Disk Utility and finally after 3 hrs was able to complete Disc 1. Then when asked to insert Disk 2, I did and after 2 hrs or so, it popped out saying the installation didn't go thru. Now when I switch on the Macbook, it shows back that 'Please Insert the "Mac OS X Install Disc 2" and when disc 2 is inserted it waits for 5 mts or so, and pops out the CD back ! Is there a way I can clean/erase the harddrive and start over ? If so how do I do that ? I tried inserting disc 1 back and holding CMD + C and also tried CMD +Option +P+R, but nothing took me to Disk Utility !! Appreciate any help !!