I will be going from a consumer grade i7-4770 based system to a dual Opteron 4280 system in the near future.  The i7 system boots via UEFI and the Opteron system boots via BIOS.  What all do I need to do in order to re-create my boot USB and not lose my config.  Just copy the config folder from my current USB to my desktop, create a new BIOS USB and copy the config folder back?

You dont need to ever recreate the usb stick (only if it fails)

 

I moved my server yesterday from non uefi to uefi without anything. Uefi or not has nothing to do with the stick. Incase uefi boot fails, then just select normal boot in bios.

Edited April 29, 20197 yr by nuhll

I created my current key with UEFI enabled, the board it's going to does not support UEFI.  But if I'm reading what you said right, it should just automagically fall back to BIOS boot with the same key?

I dont know what you mean, if you boot uefi or not should not change the contents of the stick. Unraid itself also dont care about. Like licence key or anything, because you licenced your stick, not your PC. (u can move it from PC to PC like you want)

 

Select in your Bios "UEFI: USB STICK NAME", if that is not working, then just select: "USB STICK NAME" (that usually means without uefi)

Edited April 29, 20197 yr by nuhll

The partitioning scheme is normally different between them.  If I have to re-create the USB key, I just need to make sure to copy the config folder correct?

1 hour ago, shaunmccloud said:

The partitioning scheme is normally different between them.  If I have to re-create the USB key, I just need to make sure to copy the config folder correct?

Any USB stick that has been set up for UEFI boot of Unraid should also be bootable in legacy mode if the motherboard supports it.   At least that has been my experience.

1 hour ago, shaunmccloud said:

The partitioning scheme is normally different between them.  If I have to re-create the USB key, I just need to make sure to copy the config folder correct?

I dont know. I never had issues.