[syslinux] pxelinux and UEFI laptops - broke everything which had worked with BIOS/pxelinux.0

Ady ady-sf at hotmail.com
Sat Dec 19 08:37:24 PST 2020

A minimal search and reading would be enough to understand the problem.

> A typical EFIx64/pxelinux.cfg/default entry looks like this:
> label memtest2
>   menu label ^8. Memtest86+ v4.20
>   kernel memtest420
Memtest86+ v4.20 is for BIOS (and/or CSM) only, not for UEFI.

> label memtest3
>  menu label ^7. Memtest-86 v4.3
>  kernel memdisk
>  append initrd=memtest86-floppy.img
memdisk (as of version 6.04-pre1) is for BIOS (and/or CSM) only, not 
for UEFI.

So, for UEFI boot, you need tools/kernels that are compatible with 

BTW, some EFI binaries are compatible with Secure Boot, and some are 
not - syslinux.efi 6.04-pre1 is/are in the latter group.


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