So today my MacBook Pro (2010 model) was acting weird when I was bored and changed my MacintoshHD to no use for everyone. My profile still had read/write capabilities. It wasn't frozen but it was spinning the beach ball for like 5 minutes. So I restarted it and walked away. I came back and it was stuck on a white screen with the mouse pointer in the top left corner with the apple logo in the middle. I did a safe start, although I'm not sure if I let it sit long enough. I did the command-option-p-r start with no avail. I also just did the command-s start and did the fsck -fy and return. It went through its thing and it said that MacintoshHD was ok. I typed reboot. And it's still stuck at the same screen. I do not have a backup and don't have any boot discs with me.