[syslinux] Append line size limit in syslinux 3.72

[H. Peter Anvin]

Dag Wieers wrote:
> Hi,
> 
> Is there still a known limit of 255 characters of the append line in 
> syslinux (isolinux) from the config file ?
> 
> A quick test showed me that when the APPEND line in the config-file is 
> longer than 255 characters it arrives truncated in Linux.
> 
> While typing more than 255 characters on the commandline does not cause 
> the same issue and in Linux the kernel commandline exceeds the 255 
> character limit without a problem.
> 
> This is tested using RHEL4.6 anaconda's 2.4.9 (BOOT) kernel.
> 

Ancient Linux kernels like that have 255-character limit.

Modern Linux kernels have a 2047-character limit.

	-hpa