I'm trying to upgrade from my Supermicro X9DR3-F to a MSI B650 Tomahawk Wifi.  I have the new system up and booting to bios, but that's as far as I can get.  The unraid usb drive shows up as a bootable option, but doesn't boot.  My guess is that the MSI is in UEFI mode and the usb isn't.  (The drive does show UEFI:USB... in the bios setup on MSI)  According to the docs on Supermicro's site, the motherboard supports uefi, but I don't know how to tell whether it is booting in that mode or not.

 

1) Is there any way to tell if the Supermicro is in UEFI mode or not without having to reboot to bios.  The server only has vga connections and I'm not sure I still have a monitor anywhere that can connect to it.  Or is there any way to tell if the USB drive is formatted for UEFI (I think I read something that implied that if a directory on the drive is named "EFI-" instead of "EFI", it is NOT in uefi mode, and this one does have a "EFI-" folder)?

 

2) If the drive is not UEFI mode, can it be reversibly converted to UEFI without losing all of the setup that is on it, or making it incompatible with the supermicro if this ends up not being the last thing wrong and I still have to go back?  I tried setting the MSI to CSM mode, but it says that the vbios for onboard graphics isn't supported for CSM mode, and just switched back to UEFI.  I don't have a graphics card to put in without pulling it out of some other computer.

31 minutes ago, NBjXvmXytwOAArTYRbLzdrQJ said:

If the drive is not UEFI mode, can it be reversibly converted to UEFI

All you have to do is rename the EFI- folder to remove the trailing - character.    

That fixed it.  I had seen that before but thought it was just part of a longer conversion, not the entire thing.

 

Now I have an issue where it won't boot from the usb automatically, even with that set as the only boot option, but it works fine when selected as the override.  I'm looking for the latest bios to see if that fixes it.