Hello, My lab uses old mac with OS 9.2 on it. Today something went wrong and the mac only shows a folder with a questionmark flashing when it's turned on. I did some googling and found a few solutions like disconnecting keyboard and mouse. Did not work. Then I tried pressing option key while booting. This time something was different that there was no more flashing questionmark, but now two buttons on blueish screen and nothing else. One looks like refresh button and another an arrow pointing right. Nothing happened when pressed both buttons. What am I suppose to do next? Waiting for ideas. Thanks.