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Chapter 10. Recording Advanced Formats a... > Recording with a Disc Image

Recording with a Disc Image

Consider a disc image as a single file on your hard drive that contains all of the information necessary to create a disc. There are several reasons why you may decide to create a disc image instead of actually recording a disc itself:

  • Security. If you record a CD or DVD disc from a disc image, you can be sure of the stability of the disc (none of the files were altered or updated by mistake in the interim)—an important point for software developers, for example.

  • Speed. If you have an older computer with a faster recorder that doesn't have burn-proof protection, you may experience recording errors (especially if you're recording a large number of small files) because of the slower data transfer rate. Recording your data as an image first will significantly reduce the chance of recording errors, because the image is a single continuous file; your hard drive doesn't have to read all those smaller files and send them to your recorder.

  • Convenience. If you must record the same disc from time to time but don't want to create a batch of several copies at once, use a disc image; if the disc changes, you won't waste additional discs you recorded before the change.

  • Mobility. Let me guess: no recorder on your laptop? (Or perhaps you're sharing an external CD recorder with others?) Record a disc image to your hard drive, and when the external drive is available, just record the disc from the image.


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