Anything pre-T1/T2 is pretty straightforward in my experience since those models are more or less just typical x86 PCs with EFI. It used to be more hairy on T1/

Anything pre-T1/T2 is pretty straightforward in my experience since those models are more or less just typical x86 PCs with EFI. It used to be more hairy on T1/T2 models but from what I've heard the process on those has improved.