Hello Kai!

22 May 22 02:24, Kai Richter wrote to Gerrit Kuehn:

 GK>> If there is no bootloader on the EFI partition as you wrote above,
 GK>> there is nothing the BIOS could find.

 KR> I does find the disk.

Does it just find "the disk", or does it present it as EFI-bootable option?

 KR> new disk to re-attach the old one. Then no boot anymore. The old disk 
 KR> on the same port in place of the new disk did not boot. I think 
 KR> that's because the bios does use some ID flags to identify the disk 
 KR> to boot of. I never noticed that kind of behavior on legacy systems.

For being EFI-bootable, the installation will need an EFI-partition with boot loader. Your description said your EFI partition was empty (no bootlader). This will not be recognised as bootable by the BIOS (of course).Maybe it was booting legacy before, and you changed the BIOS setting to EFI only?


Regards,
Gerrit

...  7:21AM  up 61 days, 12:27, 8 users, load averages: 0.17, 0.37, 0.48

--- msged/fbsd 6.3 2021-12-02