If your system doesn't meet the minimum requirements of Windows 11 then the installer (at present anyway) won't allow you to install it. Problem solved.My pc is old,i5 gen processor,not supporting WDDM 2.0 8 gig ram etc... what are disadventages of installing win 11 ?
You lucked out on 2 counts:I built a new Intel i5 11400 machine and did clean install of W11 just fine. Cloned the hard drive. Stuck the hard drive in my old W10 Intel machine that did not meet any of the install requirements - cpu did not pass, TPM did not pass etc. Booted without even a second thought. Runs great.