> The problem is that I cannot boot as glenda because of a vga problem. > ... > Any workarounds?
Boot as none and edit the startup parameters in plan9.ini to set the monitor and vgasize variables to what you want. Or comment out the monitor variable in plan9.ini so you can boot as glenda without automatically starting rio. To edit plan.ini: % 9fat: % ramfs % ed /n/9fat/plan9.ini