Hello Vitaliy, it looks like there's no EFI partition on the disk, but it was trying to do an EFI install.
I hope this helps. Thanks Feb 8 18:50:23 ubuntu ubiquity: Setting up grub-efi-amd64-signed (1.93.11+2.02-2ubuntu8.10) ... Feb 8 18:50:24 ubuntu ubiquity: Выполняется установка для платформы x86_64-efi. Feb 8 18:50:24 ubuntu ubiquity: grub-install: ошибка: не удалось найти каталог EFI. Feb 8 18:50:24 ubuntu ubiquity: dpkg: error processing package grub-efi-amd64-signed (--configure): Feb 8 18:50:24 ubuntu ubiquity: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1 Feb 8 18:50:24 ubuntu ubiquity: Errors were encountered while processing: Feb 8 18:50:24 ubuntu ubiquity: grub-efi-amd64-signed Feb 8 18:50:26 ubuntu ubiquity: E: Sub-process /usr/bin/dpkg returned an error code (1) ** Information type changed from Private Security to Public -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1815233 Title: grub is not installed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1815233/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
