yes. obviously, if your whole entire being and everything known about your os is that the main drive where the os is installed is c:\, then suddenly changing that to a:\ because floppy drives fell out of fashion would being nothing short of absolute chaos. you'd be amazed at the number of times c:\ is hard coded into things. It would be like swapping the brake and accelerator pedals. It would be like switching the sky to green and grass to blue. It would be total anarchy. Okay, maybe it wouldn't be that bad, but it wouldn't be good. At least for the dolt that called their system drive a:\