Since Apple's made things trickier for using single-user-mode for anything much more than cp or rm

Hmm what do you mean?

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because when you try to run programs that use core* they won't run in single user mode.

Boo to that.

When you launch terminal after core*services have launched, you can use those utilities provided on the cd.

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You can run tools that use CoreFoundation by executing the rc.cdrom script and stopping it right before it would launch the installation screen thus leaving single user mode. On the 10.4 Install DVD the necessary command would be ...

head -n 188 /etc/rc.cdrom | sh

This enables you to run diskutil in single user mode for example. But since we now also have the Terminal application on our client install media we really don't have to deal with that anymore. BTW, on the 10.3 Install CD you had to stop at line 168.

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