Mic_intel
Thank you for your detailed answer, but didn´t work!
In the "HKEY Current User\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders" folder only appear the ACTAL folders (C:\Users\myname\*) and I want to delete the OLD ones!
They are now in my E:\ drive (in the old computer C:). So I want to delete the now called: e:\Program Files, e:\ProgramData\ and e:\Windows. All with unused files (and most duplicates)! And eating near 20GB!
Any other idea?
brgds
CC