Am new to UBCD and its forums.
Work mostly in Linux, and found that the following Command Line Interface command was effective in compiling a working ubcd411.iso CD:
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mkisofs -o ./ubcd411.iso -N -J -joliet-long -b isolinux/isolinux.bin -c isolinux/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table ./
1. The so-called source directory a.k.a. the "root" directory was /home/<localuser>/ubcd-extract (and WITHOUT a "C:\" as in MS-Windows)
2. The entire ubcd-extract directory was chown'ed to the localuser rather than to the superuser, and after assembling the UBCD source tree with customizations, no Write permission was granted, i.e., all individual files were chmod'ed to 0555 a.k.a. r-xr-xr-x
3. As written in the syslinux-3.71 archive doc/isolinux.txt file and at http://syslinux.zytor.com/wiki/index.php/ISOLINUX, there does NOT need to be a pre-existing isolinux/boot.cat as this is generated by the above mkisofs command sequence.
OTOH, there certainly DOES need to be a pre-existing and correct isolinux/isolinux.bin as this is NOT generated [correctly] by the above CLI command sequence.
Any corrections, suggestions, or ways to optimize the UBCD mastering process are certainly welcome!
accrc j.h., are you reading this??
Current goal is to find the easiest way(s) to create, in Linux, floppy disk images and their gzip'ped .igz counterparts for UBCD remastering.