Need to reformat mac (OS X Mavericks) (pictures/screenshots)

[gotresearch]

Guys, I need to desperately reset my 13-in aluminum body macbook(not sure exactly when I got it, 3-4 years ago)

I initially tried resetting using my Snow Leopard disk, but that didn't work. I tried going into disk utilities, but the buttons are all greyed out. When I try command+(insert letters here) the keys are grayed out and my clicking doesn't work either. 😕

Here is what I see. Please help me 😡🙁

 

[pastrychef]

You can not format the drive that you booted up from.

Try booting from the Snow Leopard disc and initializing from there.

 

[smithrh]

....hoping it's not stolen....

(Apologies to the OP if it's not, but it is his/her very first post...)

 

[gotresearch]

Good idea, I'll try doing that


EDIT: ...not stolen.

 

[Bruno09]

Hi,

you can not erase the disk you've booted from : would be a suicide 😀

What is your current OS, and what is your goal : do you want to reinstall SL, or your current OS (if not SL) ?