<< Solved >> Unable to boot from USB

[CarlosFMartinez]

I just finished building my Hackintosh but am getting a "Reboot and select proper boot device" after following the instructions for creating the USB installer and Multibeast 11.3 on it. I am using a Gigabyte Aorus Gaming 7 board with a Sapphire Radeon RX580 video card. The USB installer is a Sandisk Cruze Glider 16GB. The F12 boot option is recognizing the flash drive. What am I missing?

 

[P1LGRIM]

What am I missing?

Replacing the EVGA GeForce GTX 1050 Ti in your profile with the Sapphire Radeon RX580.

 

[CarlosFMartinez]

Replacing the EVGA GeForce GTX 1050 Ti in your profile with the Sapphire Radeon RX580.

Done.

I am following the instructions for Mojave, am I missing a step or file on my USB Mojave installer?

 

[P1LGRIM]

am I missing a step or file on my USB Mojave installer?

Your BIOS/UEFI is not "seeing" the USB as a bootable device.
Check that it is formatted as GUID.

 

[CarlosFMartinez]

Your BIOS/UEFI is not "seeing" the USB as a bootable device.
Check that it is formatted as GUID.

Thank you, Pilgrim. My USB had been setup with Master Boot Record. Reformatted it with GUID and booted fine.