Bootloader installation error on ASUS TUF Dash F15 - Kubuntu 26.04 - Kubuntu 25.10

Hardware:

  • ASUS TUF Dash F15 (FX516PE)

  • Dual NVMe SSDs (Samsung MZVLQ512HBLU-00B00)

Problem: During Kubuntu 26.04 installation, the installer failed with:

“The bootloader could not be installed. grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=ubuntu --force returned error code 1.”

i tried to find any solution to solve this Problem with any method, i don’t have any problem with other Linux distribution, just with Kubuntu with all versions.