Mac Pro 4,1 Boot disk set to a broken Windows 10 based external disk. Keyboard NOT WORKING AT ALL Please help me
My question is the same as this guys basically https://discussions.apple.com/thread/251334143?login=true
So I was trying to use a bootcamp drive I made on my imac 2013 on my Mac Pro 4,1 (2009). I wasn't getting the boot selector when holding alt so instead I held command + r and changed my start up disk to the external HDD connected via USB.
The boot was unsuccessful and is stuck on a flashing underscore in the top left corner.
Additionally my KEYBOARD DOES NOT WORK AT ALL. I've TRIED THREE DIFFERENT KEYBOARDS. I'VE TRIED DOING ALL THE KNOWN TO ME COMMANDS RIGHT AFTER + BEFORE + DURING "the chime"... it always just has the chime>white screen *no apple logo* > then it goes into windows STRAIGHT into the flashing underscore.
The keyboard commands I've tried:
shift
command + r
alt
Command + R + P + Alt
Other things I've tried:
taking out the BIOS battery on the motherboard for more than 20 seconds after draining all power from the computer
Pressing the reset button next to the BIOS battery
spamming keys on startup and beyond
The start up external HDD does work on my imac 2013 still.
Please someone help me.
Mac Pro