Howdy, Running the latest version, 6.8.3.  I've swapped chassis/mobo before and had no issues.  Just unboxed an ASUS Prime Z390 with Core i7 9700K.  Last time I did a new build was 10 years ago so I'm pretty green on all these new BIOS settings.   That said, Im running ASUS BIOS 1302 and the system just boots straight to BIOS, and will not boot UNRAID off the USB. The UNRAID boot menu never shows up, just keeps going straight to ASUS BIOS. 

 

I've tried various settings, Windows UEFI, disabled secure boot, turned Legacy USB support on and off, diff USB ports.   At this point I've lost track of what combinations I've tried.  Anyone out there have experience with ASUS BIOS and UNRAID?    Thanks  

Edited April 22, 20206 yr by jhow

Does it get to the Unraid boot menu? 

No, just keeps booting straight to BIOS.

Have you made sure the EFI folder on the flash drive does not have a trailing ~ character so the Unraid flash drive is capable of UEFI boot? 

After a LOT of trial and error, I figured it out with the following settings, some of this configuration may not be needed as I'm not sure which one was the 'smoking gun' but here it is for those who may run into this as well:

 

ASUS Z390-A

BIOS 1302, upgraded to 1401, this works on both versions.  

 

BIOS settings for UNRAID:

 

 

Advanced USB Configuration:

• Legacy USB Support - enabled
• XHCI Handoff - disabled

Boot/Boot Configuration:

• Fast Boot - enabled

Boot/CSM(Compatibility Support Module:

 

• Boot Device Control - UEFI and Legacy OPROM
• Boot from Network Devices - Ignore
• Boot from Storage Devices - Ignore
• Boot from PCI-E/PCI Expansion Devices - UEFI Only

Boot/Secure Boot:

 

• Secure Boot State  - disabled
• Platform(PK) state - Unloaded
• OS Type - Other OS

 

 

 

 

On 4/21/2020 at 9:24 PM, itimpi said:

Have you made sure the EFI folder on the flash drive does not have a trailing ~ character so the Unraid flash drive is capable of UEFI boot? 

This helped me. Who knew one dash on a folder name would screw me.

 

Thank you!