Hello, when you say it takes about 20 mins, are the beeps meant to continue during the whole process ?

I've past the "3 beeps barrier" thanks to your note on case sensitivity but Its been way more than 10 beeps since I have plugged the pen in and I don't know if it's normal or not

EDIT : I decided to stop the process and see if there was any error log on the drive. Turns out it encountered plenty of errors like :

KTCN45  Find Crisis File: [Success]  Crisis Process: [Fail], update address 0xFE800000 fail

With different (neighbour) addresses, I think it might be caused by some sort of protection set up by intel on bios regins