Cannot boot (Solved)

[paolo]

I have a fully working system, running Sierra, however I'd like to upgrade my system.
I have tried a clean install with both Mojave and now High Sierra and am getting nowhere.
I have created an install USB drive using unibeast, but it will not boot. I have tried every USB port, but no luck. I always get he same error message:
"Reboot and Select proper Boot device
or Insert Boot Media in selected Boot device and press a key"

Any help would be much appreciated.

 

[P1LGRIM]

So many things that could cause this type of problem.
Wrong BIOS settings.
USB3 flash drive.
USB3 port.
Wrong format of USB.
USB partition >32GB.

 

[paolo]

I'm pretty sure my BIOS settings are ok, as I said, I have Sierra installed and is working fine.
All of my USB ports are USB 3.
USB stick is 16gb and formatted as per the guide here.

 

[P1LGRIM]

I'm pretty sure my BIOS settings are ok, as I said, I have Sierra installed and is working fine.
All of my USB ports are USB 3.
USB stick is 16gb and formatted as per the guide here.

"Reboot and Select proper Boot device
or Insert Boot Media in selected Boot device and press a key"

Your BIOS/UEFI is telling you that it cannot find a bootable partition to initiate.
If your BIOS settings are correct then the USB flash drive is the problem.

 

[paolo]

Ok, I'll try with a different usb stick and report back

 

[P1LGRIM]

Ok, I'll try with a different usb stick and report back

Are you relying on your BIOS settings or are you selecting the boot manager after power on ?

 

[paolo]

Selecting the boot manager and then usb drive on start up.

 

[paolo]

Have now tried with a USB 2 stick, same result.

 

[UtterDisbelief]

Have now tried with a USB 2 stick, same result.

Hi there.

Well @P1LGRIM is right - this is probably a USB failure.

Two strategies you can use:

1) Plug your UniBeast installer into one of those two black USB ports above the PS/2 port. They are certainly USB2.0. What's more, they will be active during BIOS and boot. The others may not be active until an operating-system is running.

If that doesn't work then ...

2) Boot Sierra, run IORegistryExplorer and post a screen grab of your XHC tree section. It starts about 3/4 the way down the left panel. Tell us which kexts you have installed for Sierra in EFI/CLOVER/kexts/Other and L/E.

 

[paolo]

I've tried those ports, no joy.
Requested info below, however, I have no Other or L/E folders