Hello Alfred, On Fri, 2012-07-27 at 14:59 -0400, Alfred von Campe wrote: > This appears to work just fine, but the resulting ISO image is about > 20% bigger (194M vs. 162M) and has an extra TRANS.TBL file at the top > level. Any ideas what is causing this? It's no big deal as I've got > things working, but I'm curious nonetheless... man mkisofs should give you an explanation of the used options. The directory record options used (-J, -R and -T) probably increase the ISO size compared to when those aren't used. Regards, Leonard. -- mount -t life -o ro /dev/dna /genetic/research