I tried everything lately (Fedora, Debian, Neon, Kubuntu, oSuse) but Siduction was the only distro that gave me "No bootable medium found" after installation. That was with EFI boot - installing with BIOS boot it worked fine. I ended up installing Debian and next installing Siduction into the Debian partition. That worked for EFI.
I made a full disk backup wit Clonezilla and later restored it ... to end up with a system that would not boot. That has never happened with any of the other distros I tried. So I chrooted into the partition and reinstalled grub. Now I am back in business.
The screen flickered frequently (KDE/Plasma). I tried kernel parameters in /etc/default/grub that had no effect. In fact, that config file is never used because siduction's config in /etc/default/grub.d/ overrides it. But siduction also uses a bleeding edge kernel that is even newer than the one in Debian unstable. I removed it and now use the Debian unstable kernel without flickering.
Almost all of the packages come straight from Debian unstable, i.e. Debian's repo is used directly. Siduction adds some artwork, scripts and configs but very little else.Out of almost 1500 packages on my system only 1 comes from Siduction to replace a package from Debian. And, strangely, apt-listbugs is not installed (you really need that on Debian unstable). And I am sorry to say I do not like the artwork.
Obviously Sidiction is not for the faint-hearted, but I did end up with a rolling-release system that is probably more stable than Arch or Tumbleweed. For the time being.
I use Debian unstable on another computer and I know that sooner or later that system will fail. I happened before. It will happen again. But I hope that somehow Siduction will keep running on that unfortunate day. When that happens I will be back here with praises and a much higher rating.
Have a nice day!
JS