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1 How 2 fix a hijacked boot up
I know there’s a way to silence the startup chime. If you’re knowledgeable and familiar with TERMINAL.
As a test I deliberately gave it something to beep at for an error. No memory got a beep but the three lights stayed lit. The USB ports weren’t polled (I’ve a Flash Drive with a red LED to indicate use.
No keyboard, no error response. Seems to point to a bad display subsystem. I checked all the cables and they’re all properly connected except the mic/camera.
I’m open to all insights.
Esta é uma boa pergunta?
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This series does not offer USB boot up, you need either a optical disk or FireWire drive which is setup as a bootable drive if the internal is not working or connected.
This system can't support anything newer than OS-X El Capitan (10.11.6)
por Dan
@danj Thanks for that ! It sux but I'll get around it. I'm still basing it off that the keyboard isn't polled also. While the USB drive can't boot, just reading it should produce the red light, right ?
In any case the screen stays black as night. I've checked all the connections. The 4 pigtails are reconnected and the two bigger cables are solid in place. The iSight is gone though. So what component is most likely to have failed ?
Once running it would be a candidate for either snow Leopard with server or Ubuntu Linux Apache server.
por James Walker
Ah ... The chicken or the egg conflict!! Here the chicken came first!
No, the driver needed is no present in the firmware as such the USB port is not polled or powered.
por Dan
Ok Chicken Boo! Something has to happen to recognize the keyboard which is USB. But this is tangential. Main problem is the black screen. Would you think replacing thew inverter is the next step ?
There is a Goodwill locally that has a tech program sponsored by Dell. They take donated machines, take out drives and memory, then resell cheap! My iMac was $25. If an inverter is more. than that, I'll just get another then add back memory and drive. I'm confident this time since I had one to experiment on.
por James Walker
@capwalker666 - Ah! So why does a keyboard work then!
It has to do with the order of things happening, POST happens first! Then the USB power and keyboard driver is read from the firmware so its input is active. Drive I/O happens when the OS is loaded. The RED within your drive is when handshake has taken place.
If you have a USB power meter you can see the USB interfaces power is present, its just usable by your drive.
por Dan
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