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==Downloading Debian CD images with jigdo==

Jigsaw Download, or short jigdo, is intended to be the main way of distributing Debian CD images in the future. Currently, the system works, but is not yet very comfortable to use because the download manager application is not finished.

===Why jigdo is better than a direct download===

Because it is faster! For various reasons, there are far fewer mirrors for CD images than there are for the "normal" Debian archive. Consequently, if you download from a CD image mirror, that mirror will not only be further away from you, it will also be overloaded, especially just after a release.

Furthermore, some types of images are not available as full .iso downloads because there is not enough space on our servers to host them.

Of course, a "normal" Debian mirror does not carry any CD images, so how can jigdo download them there? jigdo achieves this by downloading individually all the files that are on the CD. In the next step, all these files are assembled in one big file which is an exact copy of the CD image. However, all this happens behind the scenes - all that you need to do is tell the download tool the location of a ".jigdo" file to process.

More information is available from the jigdo homepage. Volunteers willing to help with jigdo development are always welcome!

===How to download an image with jigdo===

    * Download a package containing jigdo-lite, which is available for GNU/Linux, Windows and Solaris from the jigdo homepage. For FreeBSD, install from /usr/ports/ftp/jigdo or grab the package with pkg_add -r jigdo.
    * Run the jigdo-lite script. It will ask for the URL of a ".jigdo" file to process. (You can also supply that URL on the command line if you like.)
    * From one of the locations listed below, pick the ".jigdo" files you want to download, and enter their URLs at the jigdo-lite prompt. Each ".jigdo" file corresponds to one ".iso" CD/DVD image.
    * If you are a first-time user, just press Return at the "Files to scan" prompt.
    * At the prompt "Debian mirror", enter http://ftp.XY.debian.org/debian/, where XY is the two-letter code for your country (for example, us, de, uk. See the current list of available ftp.XY.debian.org locations.)
    * Follow the instructions printed by the script. If all goes well, the script finishes by calculating a checksum of the generated image and telling you that the checksum matches that of the original image.

For a detailed, step-by-step description of this process, have a look at the Debian jigdo mini-HOWTO. The HOWTO also explains jigdo's advanced features, such as upgrading an older version of a CD image to the current version (by downloading only what has changed, not the entire new image).

Once you have downloaded the images and written them to CD, be sure to have a look at the detailed information about the installation process.

==Kaynak==
http://www.debian.org/CD/jigdo-cd/