Date: Wed, 11 Jan 2012 16:29:43 +0530 From: Amitabh Kant <amitabhkant@gmail.com> To: freebsd-questions@freebsd.org Subject: mkisofs increasing iso size by 100 MB Message-ID: <CAPTAQBJL2=5O2ia2bk3cKUarro5S10HnsRmpWTtkCxwfbUQ8PA@mail.gmail.com>
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I am trying to customise the bsdinstall auto script. I can mount the iso (amd64 arch / 9.0 RELEASE) and change the shell script as per my requirement. Once I try to re-create the iso file using mkisofs utility, the size of the final iso increases by 100 MB if -J (joliet) mode is used. If I remove the joliet mode, it still increases by around 97 MB. Even if no changes are made to any of the files, the result is same. The process I have followed is as follows: # mkdir /usr/iso # cd /usr/iso # dd if=/dev/cd0 of=org.iso bs=2048 # mdconfig -a -t vnode -f org.iso -u 0 # mount_cd9660 /dev/md0 /mnt # mkdir staging # cd staging # rsync -a /mnt/ . With Joliet mode # mkisofs -J -R -V CustomBSD -no-emul-boot -b boot/cdboot -iso-level 3 -o /usr/iso/my_custom.iso . Without Joliet mode # mkisofs -R -V CustomBSD -no-emul-boot -b boot/cdboot -iso-level 3 -o /usr/iso/my_custom1.iso . The original iso is 612M, custom.iso is 712M and custom1.iso is 709M. System details: FreeBSD amd64 9.0 RELEASE running inside a virtualbox with 2GB RAM. Where am I going wrong? Amitabh
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