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f33e652
(Get the code!)
Just to bump this... I am still getting a warning about a missing ESP when installing 22.04 on BIOS-based systems.
I get a warning that the system has no ESP and probably will not boot. Of course, on BIOS, I don't _need_ an ESP and it boots fine.
For clarity as to *why*:
One of the systems I am testing on contains (right now) Win10, FreeBSD, Ubuntu, Mint, Pop_OS, Devuan, openSUSE Leap, and Garuda.
Because it has a BIOS, only 4 primary partitions are allowed. That is the maximum.
Windows insists on 2 MBR partitions, a Windows Reserved volume and a C: drive. I removed any recovery partitions. FreeBSD can only install into a primary partition; it cannot run from a secondary partition at all.
So I only have 1 left. This is my Extended partition with all the Linux distros in it. I literally have no room for an ESP. I have 4 MBR partitions and that is all that is possible.
Note, none of Devuan, Debian, openSUSE, Manjaro, EndeavourOS, Garuda, MX Linux, or any other non-Ubuntu-based distro complained.
Pop_OS, Linux Mint, Ubuntu Cinnamon and Ubuntu Unity all complained.
This problem is unique to Ubuntu and does not affect Debian or Debian derivatives, as far as I can tell.