SliTaz Forum

matcarfer

Member

Registered: 2025-12-29

Posts: 2

Add 32-bit UEFI Boot Support to x86_64 Images for Compatibility with Older Atom Devices

Request:

Please consider adding 32-bit UEFI bootloader support (e.g., a 32-bit bootia32.efi alongside the 64-bit bootloader) to the x86_64 PorteuX images/ISOs.

Reason:

Many older Intel Atom devices (Bay Trail/Cherry Trail, e.g., with Z3735F) feature 32-bit UEFI firmware but fully support 64-bit kernels and OSes. Current x86_64 SliTaz images lack a 32-bit EFI stub, preventing boot on these systems in UEFI mode.

Benefit:

This change would significantly improve hardware compatibility for legacy-yet-capable devices, allowing lightweight PorteuX usage without needing separate 32-bit builds or compromising 64-bit performance. Other distros achieve this by including bootia32.efi in /EFI/BOOT/.

Thanks for considering!

matcarfer

Member

Registered: 2025-12-29

Posts: 2

Re: Add 32-bit UEFI Boot Support to x86_64 Images for Compatibility with Older Atom Devices

I meant SliTaz (I already asked the same thing for PorteuX, sorry...)

Also, I cant seem to find the edit button.

shann

Administrator

Registered: 2011-04-01

Posts: 1,296

Website

Re: Add 32-bit UEFI Boot Support to x86_64 Images for Compatibility with Older Atom Devices

Hi matcarfer,

Best wishes for this year,

Need to check for add this, infact only bootx64.efi is provide for 6.0 x86_64 (current now call 6.0).

shann

Administrator

Registered: 2011-04-01

Posts: 1,296

Website

Re: Add 32-bit UEFI Boot Support to x86_64 Images for Compatibility with Older Atom Devices

Hi matcarfer,

I rework tazlito to add bootia32.efi file when we build x64 iso.

Below links to download new isos with both bootia32.efi and bootx64.efi

https://people.slitaz.org/~shann/slitaz-current64-stuff/isos/slitaz-6.0-base64-grub2.iso

https://people.slitaz.org/~shann/slitaz-current64-stuff/isos/slitaz-6.0-core64-grub2.iso

Doing test with qemu it's ok.

qemu-system-x86_64 --enable-kvm -smp 2 -m 1G -cdrom slitaz-6.0-base64-efi32.iso -bios /usr/share/qemu/ia32/OVMF.fd