On Tue, Nov 07, 2017 at 08:59:37PM +0100, Thomas Schmitt wrote: >Hi, > >while inspecting debian-live-9.2.0-amd64-cinnamon.iso i wondered why its >ISO 9660 filesystem size is smaller than its image file size. >That's a problem with the advise how to verify ISOs on DVD or USB stick > https://www.debian.org/CD/faq/#verify >because programs "isosize" or "./check_debian_iso" will use the filesystem >size for computing checksums. > >The file /.disk/mkisofs in the ISO tells the reason: >xorriso was used in its native command mode, not in its mkisofs emulation. >This mode by default does not count the padding as part of the filesystem. > >To change to the desired behavior one would have to give command > > -padding included > >or, because the image will never fit on a CD, it is safe to disable padding >and to save 300 KiB of image file size: > > -padding 0 > >The command may be given at any position in the xorriso command list.
ACK, thanks! I'll get this fixed up in live-wrapper. -- Steve McIntyre, Cambridge, UK. [email protected] "Yes, of course duct tape works in a near-vacuum. Duct tape works anywhere. Duct tape is magic and should be worshipped." -― Andy Weir, "The Martian"
