I can't Install Mac OS X on external drive!

hi all,
i got an external drive that i hoped to use for emergeny disk repair. When i try installing Mac OS X on it, it says that Mac OS X cant be installed on it. does anyone know why this is and how i can install Mac OS X on it?

Sure - depends on how you prep the drive. I went through the same agony, until I found the solution. Simple, actually.
Two things -
1. use a Firewire drive only. USB will not work to boot from.
2. When partitioning, use the GUID partition scheme option to prep the drive.
I've got one here I do it with all the time. When it's connected and I boot, hold down Option and it's there as another bootable drive. Takes longer, since it's not internal, but can save your butt from time to time.

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Aous:
Welcome to Apple Discussions.
can i install it from a portable dvd drive?
By a portable DVD drive do you mean an external firewire DVD drive, or something else?
Why would you consider either an external drive or a network? Does that mean that the internal optical drive does not work?
the ibook had Tiger installed and running smooth which is bad since i selected erase and install option and i don't have the installation discs that came with the machine.
You really need to have possession of install disks for the OS you are running.
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I can't Install Mac OS X on external drive!

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