Dual boot Windows 10 and 11

[davehc]

Maybe a better option than having a dedicated computer to try Windows 11
I am using a non compatible Laptop. I made sur my Windows 10 installation was up to date and, the usual precaution, Made a Macrium image. Started the install of Windows 11 from a usb.

All went perfectly. The dual boot was setup without any help from me. I have now customised and installed my few items of third party software.
SO FAR: No problems. I synced with Windows 10 and everything was pretty much taken care of.

 

[davehc]

This is how it looked

 

[cadmasterUK]

I have an old Dell Precision T1600 desktop that I use for internet and emails, originally running Win7, I upgraded to Win10 years ago and recently had various problems that prompted me to try Win11, even though PC Healthcheck noted incompatibility. Now I see a similar screen to the above but with Windows 7 as the only other option, not Windows 10.
Booting to Win7 produces a completely minimal installation - no programmes, no data.
Windows 11 boots with some strange actions eg on the startup screen, there is no cursor and no response to the keyboard for some minutes. Areas of the Settings menus blank out when the cursor rolls over (I have posted a query elsewhere).
Can I rollback to the previous Windows 10?