[UnRAID v6.6.7] LZMA data is corrupt - Unable to boot from backup

[phishfi]

So, for a bit of context... I bought a new motherboard, CPU, and RAM, and upgraded my server earlier today. When I did this, I was having trouble getting the old flash drive to boot, so I ran a backup against a new drive assuming I'd just switch the keys over once everything was up and running. The server booted to the new drive exactly as expected, but I left all the SATA drives unplugged to ensure a smooth transition, I just wanted to make sure UnRAID would boot. 

 

Then, I had a bit of hardware changes to make, including plugged the SATA drives in, and now I cannot boot to the new (or old) flash drive. Every time I try to boot to either drive I get "LZMA data is corrupt". If I boot via UEFI, it just hangs at "Loading /bzroot...", but if I boot via legacy it get just past that like (add the "ok" at the end) and then tells me about the LZMA data corruption and then "-- System halted". 

 

I wouldn't mind starting UnRAID from scratch, provided I can transfer my Docker containers and the raw data / parity over without delays/issues, but right now I'm at a total standstill. 

 

Any help is greatly appreciated.

 

For troubleshooting, I'm back to having no storage devices attached except for the flash drives.

[phishfi]

After fiddling around with things and re-imaging the new flash drive, I am consistently getting either LZMA data is corrupt, or the attached screen, where it hangs indefinitely...