Template:Configuration location and name
Note: In the following paragraphs, the "/" directory represents the root of the filesystem in which Syslinux (in its several variants) is (going to be) installed.
SYSLINUX / EXTLINUX default to searching for the config file in the installed directory (containing ldlinux.sys or extlinux.sys).
[3.35+] SYSLINUX also searches for the config file in "/boot/syslinux/", "/syslinux/" and "/", in this order.
[-3.xx] SYSLINUX uses syslinux.cfg as config file name. EXTLINUX (merged into SYSLINUX as of 4.00) used extlinux.conf.
[4.00+] SYSLINUX searches first for extlinux.conf and then for syslinux.cfg in each searched-for directory, before falling back to the next directory.
[-4.02] ISOLINUX uses isolinux.cfg as config file name, searching first in "/boot/isolinux/" [2.00+], then in "/isolinux/" and then in "/".
[4.03+] ISOLINUX searches for isolinux.cfg and then for syslinux.cfg in "/boot/isolinux/" before searching for the same files in "/isolinux/", "/boot/syslinux/", "/syslinux/", and "/", in this order.
Since version 4.03, the resulting behavior is that the same "
file can optionally be used for
SYSLINUX / EXTLINUX / ISOLINUX,
while specific isolinux.cfg
and/or extlinux.conf files would take precedence if present.
Since version 4.03, the resulting behavior is that
any of the respective config files (or even all of them)
can optionally be located together in the same
defaults to searching for
syslinux.cfg in the installed directory, where
is located and containing also its corresponding
Note that syslinux.efi could be optionally renamed.