Installation starts in drive 1 after normal setup, then this symbol A:\> stops me installing because it demands a name of a file or command. I have tried to use the F1 To F16 For help but no such luck, also with alt key held down. There is nothing in the general help sections for step by step instruction. The machine is a new iMAC. I have probably missed something, and hopeless in Dos.................. Somebody please help.