Hey there @vlayer,
No need to enter a license number, since it is locked in the BIOS somewhere. I did a clean install on a SSD, didn’t have to enter a code anywhere.
Why do you need to migrate? Back up your data and do a clean install on correctly aligned partitions – that is what I would always prefer over messing around and fixing old installations.
Sorry, but I don’t know about power limits, but I’ll definitely have a look at that sometime….so far I’m very happy with the battery run time, which will probably not improve when increasing power limits.
https://de.wikipedia.org/wiki/Ernst_Kuzorra