I have installed macOS Monterrey on my MacBook pro from 2010 but when I reboot it shows the deny symbol and only shows the efi boot when the usb is plugged in. It can run normally with the usb unplugged but it cannot boot with it unplugged
I have installed macOS Monterrey on my MacBook pro from 2010 but when I reboot it shows the deny symbol and only shows the efi boot when the usb is plugged in. It can run normally with the usb unplugged but it cannot boot with it unplugged
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