I have a macbook pro. I recently upgraded it to mavericks. i also had windows 8 in the other partition. but now i accidentally deleted my mac os. how can i reinstall mavericks.? pls hlp me out

I have a macbook pro. I recently upgraded it to mavericks. i also had windows 8 in the other partition. but now i accidentally deleted my mac os. how can i reinstall mavericks.? pls hlp me out

paul dave,
to reïnstall Mavericks on your 13-inch Mid 2012 MacBook Pro, you can try booting into Recovery mode by holding down ⌘R as your MacBook Pro starts up. Eventually it will show an OS X Utilities menu on the desktop; select Reïnstall OS X from that menu, and follow the instructions which it provides to reïnstall it onto its internal disk.

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