HELP: Keyboard/mouse unresponsive during Startup Manager (HD select)

Discussion in 'Mac Pro' started by PowerMac G4 MDD, Dec 31, 2014.

  1. PowerMac G4 MDD, Dec 31, 2014
    Last edited: Dec 31, 2014

    PowerMac G4 MDD macrumors 68000

    PowerMac G4 MDD

    Jul 13, 2014
    At the intersection of Conch and Coral.
    Hello everyone,

    I am having an issue on my 1,1 Mac Pro. I have 4 HDs in this, one of them being a Windows disk. I was in Windows and wanted to restart back into Snow Leopard, but once the boot selection screen came up, both my mouse and keyboard became unresponsive. I was able to hold down Alt. to initiate the boot selection screen, but not anything after that. I tried unplugging my keyboard/mouse and plugging them back in, but still nothing.

    I simply CANNOT select the boot disk I want because I cannot use my mouse to select it, nor my keyboard! I tried to boot regularly, but it's defaulted to Windows for some reason, even though my Mac drive is in drive bay #1. What could be the issue here? And how do I make Windows not think that its drive is the main boot drive?

    EDIT: I tried again, although this time I unplugged an external HD I had connected temporarily; I also tried holding down the Alt. a minute into the boot manager. This time I was able to use my keyboard, however my mouse was still unresponsive. Any ideas still?

  2. Intell macrumors P6


    Jan 24, 2010
    Make sure your machine is not connected to any networks. Then try it with one drive at a time until you locate the drive that causes the freezing.

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