On 24/01/2025 at 01:14, Mitchell Augustin wrote:
Does it happen at every boot or only the first one ? On the original machine or
a different one ?
First boot only, and on different host machine
If EFI boot, then I suspect this is shim fallback.
The host does not have EFI boot entry for the disk so at first boot, it
boots from the removable media path EFI/BOOT/BOOT{ARCH}.EFI. If shim is
installed in this location, shim fallback scans EFI/*/BOOT{ARCH}.CSV and
populates EFI boot entries, then triggers a reboot.
