Hey Steve, forgot to mention that you need to disable the automatic grub installation for the workaround.
I've run the installation with the preseed file mentioned above and this is the syslog: https://drop.leah.is/pJqPJ62E/+inline Regards Leah Am Mi., 31. Juli 2019 um 19:32 Uhr schrieb Steve McIntyre <st...@einval.com >: > Hi Leah, > > On Wed, Jul 31, 2019 at 10:19:19AM +0200, Leah Oswald wrote: > >Package: debian-installer > >Version: 20190702 > >Severity: important > >Tags: d-i > > > >Hey, we tried to install debian buster with our preseed file (see: > https://paste.debian.net/hidden/ecde0369/) that was working with debian > stretch. > >Now the installation fails at installing the grub dummy ("Unable to > install GRUB in dummy | Executing "grub-install dummy failed.""). > > > >The syslog of the installer gives a hint to a missing access to the efi > variables: > >Jul 30 15:40:04 grub-installer: info: Installing grub on 'dummy' > >Jul 30 15:40:04 grub-installer: info: grub-install does not support > --no-floppy > >Jul 30 15:40:04 grub-installer: info: Running chroot /target > grub-install --force "dummy" > >Jul 30 15:40:04 grub-installer: Installing for x86_64-efi platform. > >Jul 30 15:40:06 grub-installer: grub-install: warning: Cannot read EFI > Boot* variables. > >Jul 30 15:40:06 grub-installer: grub-install: warning: read_file: could > not read from file: Input/output error. > >Jul 30 15:40:06 grub-installer: grub-install: warning: vars_get_variable: > read_file(/sys/firmware/efi/vars/Boot0001-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var) > failed: Input/output error. > >Jul 30 15:40:06 grub-installer: grub-install: warning: efi_get_variable: > ops->get_variable failed: Input/output error. > >Jul 30 15:40:06 grub-installer: grub-install: error: failed to register > the EFI boot entry: Input/output error. > >Jul 30 15:40:06 grub-installer: error: Running 'grub-install --force > "dummy"' failed. > > > >After manually mounting the efivarfs the installation of the grub dummy > works. We could work arround this issue by adding the following line to our > preseed file, but this shouldn't be the solution rather than a workarround. > > > >d-i preseed/late_command string in-target sh -c "mount -t efivarfs > efivarfs /sys/firmware/efi/efivars; grub-install; update-grub;" > > Hmmm, that's odd. I'd expect the efivarfs stuff to Just Work (TM) for > you. Can you share a full syslog please? Curious to see what's going > on. > > -- > Steve McIntyre, Cambridge, UK. > st...@einval.com > Into the distance, a ribbon of black > Stretched to the point of no turning back > >
