Hi there,
I have acquired some iMacs from 2009 which have had windows 7 put on them for whatever reason. I'm trying to get macOS back on them but whenever I boot them up (current OS is corrupted btw) I get a blank grey screen followed by the PC style 'No boot device available press enter to try' Here's the weird bit though, no matter what keys I press (Alt to get to boot menu, Cmd+r, Cmd+alt+p+r) I still end up on that screen with out any sign it's registered them. Even when I press enter to try again nothing happens. The light on the mouse comes on and once I've booted into Ubuntu off a DVD, the keyboard works fine so the USB ports aren't bad. That's the other thing, it will boot off a DVD (I've tried windows and Ubuntu which both work) but I don't have a mac DVD and as I can't enter the boot menu I can't select a USB drive and it doesn't detect it. It seems like the firmware has been tampered with as even with the HDD completely erased, the same things happen. I mean to make a snow leopard DVD but haven't got any spare atm. Has anyone got any solutions? Thanks
I have acquired some iMacs from 2009 which have had windows 7 put on them for whatever reason. I'm trying to get macOS back on them but whenever I boot them up (current OS is corrupted btw) I get a blank grey screen followed by the PC style 'No boot device available press enter to try' Here's the weird bit though, no matter what keys I press (Alt to get to boot menu, Cmd+r, Cmd+alt+p+r) I still end up on that screen with out any sign it's registered them. Even when I press enter to try again nothing happens. The light on the mouse comes on and once I've booted into Ubuntu off a DVD, the keyboard works fine so the USB ports aren't bad. That's the other thing, it will boot off a DVD (I've tried windows and Ubuntu which both work) but I don't have a mac DVD and as I can't enter the boot menu I can't select a USB drive and it doesn't detect it. It seems like the firmware has been tampered with as even with the HDD completely erased, the same things happen. I mean to make a snow leopard DVD but haven't got any spare atm. Has anyone got any solutions? Thanks