yes you are right here an exaple of an system.cnf (it's a text file)
BOOT2 = cdrom0:\HDLD_SVR.ELF;1
VER = 1.0
VMODE = NTSC
create the iso with cdgenps2 3.0 and change the lba to the system.cnf file to 12231 and add the elf, press the cd with img written on it and save finally burn the result.
the problem of loading burnt dvd with hdloader is a chip problem with hdloader or swapping of dvd
ps2os betatester, ps2tools codev, hdldump frontend dev
6 sony mc w/ps2os 0.2.4, hdl, ps2rmp1.50,ps2mp3...
na+hd maxtor diamondmax 7200 120GB
PS2 SCPH-30004R V6 ÐM$3 V2 firm 2.4 B.4
PS2 SCPH-50003 V9 ÐM$4 PRO firm toxic os 0.1