Please give some more details, specifically:

1. which iso (with sha256sum)?
2. was it a cleared disk, or existing paritions?
3. which installation mode (default or expert)?
4. which partitioning?
5. which network mirror (or none?)?
6. which software selection(s)?
7. which init system?
8. # md5sum $(find /boot/efi -type f)
9. please do 8 for the "working debian" as well

10. which EFI brand and version?

regards,

Ralph.

On 22/02 23:25, Jonathan Moebius wrote:
> Dear all,
>
> I have switched to a new computer and tried to install Beowulf 3.1.0 in a
> pure-EFI setting.
> I have tried installing on a SATA SSD as well as a a m.2 PCIe SSD. Originally,
> the plan was a dual boot install with Win10 being installed first, however
> after several failed attempts, I scraped Win10 and went for a Linux-only
> install.
> Installation seems to run smoothly but after reboot grub presents itself
> without the "graphical" selection menu but instead delivers the line
> "Minimal BASH-like line editing is supported..."
>
> After 5 hours of installing and re-installing I tried installing Debian Buster
> 10.8 (I understand, Beowulf 3.1.0 is based on 10.8). With debian the
> installation works out of the box.
>
> I have found following hints regarding this:
>
> EFI Partition may be missing or too small
> I tried both with guided partitioning and manual partitioning, I created EFI
> partitions up to 1 gb without success.
>
> Grub may have to be re-installed.
> I tried to chroot into the installation and did a grub-install (after mounting
> the efi-partition). This did not solve the issue
>
> Grub.cfg may be missing
> I compared the grub.cfg from Debian and Devuan. Superficially they look very
> similar.
>
>
> Do you have any hints what else to try? Can you spare me going back to debian?
>
> Kind regards,
> Jonathan
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