@mangeurdenuage Not only Lenovo laptops will refuse to boot anything other than Winblows (in practice, most laptops do because of shitty secure boot implementations), the EFI implementation on new Lenovo laptops is so trash and so broken that even with secure boot disabled, it's impossible to properly install GNULinux.

An acquaintance of mine had issues with an Ideapad (2022) while trying to install Debian unstable, the installer would obviously boot in EFI mode but for some reason refuse to create a GPT partition table and install the EFI bootloader properly, it tried to install always as MBR, while being booted in UEFI mode.

After several days i recommended two possible workarounds, Debian bootstrapping which requires some Linux literacy or installing on the SSD on a live environment using virt-manager to create a VM, then installing through the VM which has a proper EFI implementation and everything would work as intended. He finally got it installed with virt-manager but this is ridiculous.

tldr: Lenovo Ideapad EFI on laptops is broken and it's impossible to install Linux on it through normal means.