Hi, this is a live-wrapper spin-off of a thread on debian-cd about options used in the various Debian ISOs. https://lists.debian.org/debian-cd/2018/02/msg00012.html
I compared the -as mkisofs options of ./.disk/mkisofs in debian-9.3.0-amd64-netinst.iso and the live-wrapper commands of ./.disk/mkisofs in debian-live-9.3.0-amd64-xfce.iso Missing in live-wrapper and effectively present in debian-cd netinst are these commands -joliet on -compliance joliet_long_paths:joliet_long_names -find / -exec mkisofs_r -- The commands -joliet and -compliance may be put at any place in the command sequence. They are equivalent to -as mkisofs options -J -joliet-long. Command -find has to be placed after all -map commands, because it shall apply the effect of -as mkisofs option -r to the readily composed file tree: user id and group id become 0, all r-permissions get granted, all w denied. If there is any x-permission, then all three x get granted. s- and t-bits get removed. The -chmod 755 command of live-wrapper will grant w-permission for the ISO's root directory, if i am not mistaken. If this is desired, then the -find command should happen before the -chmod. ------------------------------------------------------------------------- The comparison was mainly made by output of xorriso command -status. The settings of debian-cd netinst ISO were obtained in native command format by giving them to the emulator command, ending it by "--", and performing command -status "short": $ xorriso -as mkisofs -o /dev/null -r -J -J -joliet-long -cache-inodes -- -status short -rollback_end (-o /dev/null and -rollback_end are just to prevent any binary output to terminal, in case some argument is interpreted as input file path.) The plain default settings as used with live-wrapper were obtained by $ xorriso -status short (This depends of course on possibly existing startup files with xorriso commands. I assume that Debian ISO production has none of them.) The -find command is not reported that way, because it is not a setting in native xorriso command language but rather an action. Have a nice day :) Thomas