[syslinux] special meaning of '--' in pxelinux.cfg

Shao Miller Shao.Miller at yrdsb.edu.on.ca
Wed Dec 23 07:39:08 PST 2009

Jodok Ole Muellers wrote:
> Hello,
> I often see the double dash -- in the append line in isolinux/syslinux 
> configurations
> I only know this as "disable further option processing" e.g. in bash.
> What is the function of the -- ?

No idea.  Triple-hyphen is for Multiboot (syslinux/doc/mboot.txt).

> I don't see any difference if I use it don't use it.
> E.g here :
> append  vga=normal initrd=/install.amd/initrd.gz -- quiet
> append vga=normal initrd=debian-installer/amd64/initrd.gz -- 
> console=ttyS0,9600n8 quiet

In these two examples, the options before the double-hyphen are more for 
the boot-loader and the options afterwards more for the kernel.  Perhaps 
these double-hyphens serve as a visual aid to distinguish these?

- Shao Miller

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