Hi, i wrote > > xorriso -osirrox on:auto_chmod_on -overwrite nondir \
David Wright wrote: > For this particular use, I think I would use "-overwrite off" I do not really know how the /pool directories of a DVD set are supposed to be related. When testing my proposal i did not have a full set at hand but rather used for i in debian*8.1*amd*iso which matched two ISOs in my collection of bootables: debian-8.1.0-amd64-netinst.iso debian-live-8.1.0-amd64-kde-desktop.iso Expectably they have many /pool files in common. If one wants to prevent overwriting but wants the xorriso run to go on after a prevented overwrite attempt, one may raise the abort threshold from default severity "FAILURE" to "FATAL": xorriso -abort_on FATAL \ -osirrox on:auto_chmod_on -overwrite off \ ... This will still emit error messages like xorriso : FAILURE : While restoring '/u/test/poolA/main/x/xfsprogs/xfsprogs-udeb_3.2.1_amd64.udeb' : file object exists and may not be overwritten but courageously try to extract all other files. The man page is huge, i confess. Everybody is invited to ask for advise, e.g. at bug-xorr...@gnu.org . People who use xorriso should put their favorite runs with some comments to public places where googlers can find them. It would be helpful to mention a few keywords which come to the mind of the xorriso user when thinking about her/his own use cases. (Send negative comments to upstream first ! :)) Have a nice day :) Thomas