It sometimes happens that, in an extreme situation, it is necessary to reinstall the system. We have, indeed, explained in a recent tutorial that this is not difficult or time-consuming, and that it can be an easy and reliable way to restore the system to a known, clean state without losing any data.
However, the technique we advised in that tutorial does have one step that can be slightly troublesome: “Locate and start up from your system installer disk.” The assumption here is that you’ve got something like a Tiger installer DVD. But what if your optical drive is on the blink, and won’t read the DVD? What if the DVD gets lost, or scratched?
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