I tried to start up my computer and got a flashing file with a question mark. So I held down the ⌥-key on boot and brought it into recovery-mode.
After going through the different options I went to the disk utility and all I see is the grayed out SuperDrive and below there is disk0 and Mac OS X Base system.
Leaving disk utility I went to reinstall Mac OS X. After the verification and agreeing the terms, it doesn't show my harddrive.
Did I unmount the harddrive or what could the reason it's not showing up?