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Reboot and select proper boot device or insert boot media in selected boot device and press a key Error

rootww

New member
Joined
Feb 11, 2025
Messages
4
Motherboard
Intel B85
CPU
Intel Core i5-4570
Graphics
NVIDIA GTX 750 Ti
Mobile Phone
  1. Android
Hello. I am trying to install macOS on my desktop. I can't boot my usb sadly. I'm getting Reboot and select proper boot device or insert boot media in selected boot device and press a key error. How can I solve it.

My folders:
EFI/BOOT|OC
com.apple.recovery.boot/BaseSystem.chunklist and dmg.
 
Hello. I am trying to install macOS on my desktop. I can't boot my usb sadly. I'm getting Reboot and select proper boot device or insert boot media in selected boot device and press a key error. How can I solve it.

My folders:
EFI/BOOT|OC
com.apple.recovery.boot/BaseSystem.chunklist and dmg.
You also need the EFI as well
 
You also need the EFI as well
What do you mean? I created a partition and I put EFI and com.apple.recovery.boot folders onto root folder of my USB.
 
What do you mean? I created a partition and I put EFI and com.apple.recovery.boot folders onto root folder of my USB.
Did you set the UEFI Boot in BIOS?
 

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