Who Me Too'd this topic

I bouth my PC (MEDION AKOYA E63007 MD34300 (Material number: 10023710)) in Aldi in april 2021. It has Windows 10 (Home version) pre-installed and uses Intel RST (= Rapid Storage Technology) in stead of AHCI (= 'Advanced Host Controller Interface'), and therefore Ubuntu Linux cannot be installed besides Windows 10. For more information about this problem, see:  https://help.ubuntu.com/rst/  Ubuntu advises to turn off RST in the BIOS and to change the storage controller protocol from RST to AHCI (= 'Advanced Host Controller Interface'), but I did not succeed in doing so. My questions: i) Does my PC uses Intel RST because it has a (hot) removable hard disk and is it therefore an exception compared to other pc's of Medion (that hopefully still use AHCI)? ii) Or do all new pc's and laptops of Medion now use Intel RST as 'storage controller protocol' so that the problem remains? Thanks in advance. Kind Regards.