I was trying to upgrade my HTPC from 10.0.4 to 11.0.1.
When the upgrade was done and rebooted, I only saw the syslinux text line for a second or so, then it rebooted and so on and on ...
The HTPC is a regular PC with an AMD Athlon 200GE APU.
When I revert to 10.0.4 by replacing the KERNEL and SYSTEM files, the HTPC boots fine.
I also tried it on two other PCs (Ryzen 7 with Vega 64 GPU, Ryzen 5 with nVidia 1070 GPU - the legacy build) - always a boot loop.
How to debug? (There is nothing in the logs)