It's still correct as of the current stable release, however this has been improved in git master for the next release - you'll only have to have copies of the files you modify.
On Wed, 2020-07-01 at 02:26 -0400, Juergen Fiedler wrote: > I have a setup that uses ISOLINUX to boot from CD in 'Legacy' BIOS > environments, and Grub for USB drives. > > The documentation seems to say that I need to copy all of > /usr/share/live/build/bootloaders/isolinux/ into > config/bootloaders/isolinux/ and then make my modifications. Is that > still the correct way to go, or is there a good way to only supply > the > modified files? > > To be sure, copying everything works. The main reason it bugs me is > that it makes revision control of the configuration weird to have > binary blobs sitting there alongside the actual configuration files. > > > Thanks, > --Juergen >