OpenBSD to my laptop

I use OpenBSD for my invisible firewall.
I am currently running OpenBSD on my Apple Powerbook G4 400MHz
To make a bootable cdrom for use with macppc arch, I have the following shell script

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#!/bin/sh
ISODIR=macppc
cd $ISODIR && mkhybrid -o $ISODIR.iso -hfs -part -l -J -r -L iso
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