How do I playback commercial DVD's on fedora 17

You don't need drivers. You need to adjust the resolution and refresh rate. If you plug in an old CRT monitor then Linux will probably boot and you can edit the conf file to change the settings. Most LCD monitors require 50-60Hz refresh rate.

Yes, the router dictates the IP and range. So if you have modem for your ISP connection. Just attach a router.

Example of my Belkin.

1. Download an ISO image corresponding to your Computer's Processor Architecture (i.e. 32 bit or 64 bit)
2. Using an Image Burner application like ImgBurn, burn the ISO image to a blank CD or DVD (depending on whether you chose to download a CD Image or a DVD Image)
3. Restart your computer with the newly burned CD/DVD Image of Fedora
4. Now select it during the Boot Up process as the medium to boot from (i.e. press "F9 key for Boot Menu")
5. Fedora will boot automatically in 10 seconds. Launch the "Install to Hard Disk" application after Fedora boots; then follow its prompts.
Done.
For more information refer to this link for Official Documentation

Despite the mention of playback, do you mean this is when you put in a blank DVD to record?
Are you just getting started with it?
There are two sub-format of discs that can be used for recordings.
Machines will support either DVD-R or DVD+R but recently some now take either.
Check in the instruction manual which type yours uses (because if it supported both we'd have no problem)
However, if this is about playback of your own previously recorded or commercially released discs (movies) then check a disc is clean and free from marks, blemishes and especially scratches.
(Great things, optical discs but very touchy about the state of the surface because of the laser reading method)
Next up is to clean the scanning lens in the machine.
This is done easily with a Lens Cleaner disc kit available everywhere very cheap.
Follow the instructions that will come with it.
If no joy after this it's back to the shop - if guarantee still applies - or to a repairer if not. Get a quote and see how you feel about that or getting another recorder.

Hi,on most of the DVD players regional set up cannot be changed.
As an easy solution ,you can play them in your Laptop and with proper connection you can watch them on your TV as well..
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DVD region codes are a digital-rights management technique designed to allow film distributors to control aspects of a release, including content, release date, and price, according to the region.DVD video discs may be encoded with a region code restricting the area of the world in which they can be played.

The American DVD Copy Control Association in California requires that DVD-player manufacturers incorporate the regional-playback control (RPC) system - according to the Australian Competition and Consumer Commission, an Australian government agency.[1]

There are six different official regions and two informal variations.[citation needed] DVDs may use one code, a combination of codes (Multi-Region), most codes (Region 0) or every code/no codes (Region All). The commercial DVD player specification requires that a player to be sold in a given place not play discs encoded for a different region; however, region-free DVD players are also commercially available.[2] In addition, many DVD players can be modified to be region-free, allowing playback of all discs.[3]

This machine will only accept DVD-RAM & DVD-R Discs.

All other formats of Recordable DVD will be rejected for either Recording or Playback.


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Cheers

Andy

DVD drives are generic. They do not require specific drivers. Fedora includes a DVD driver built-in. If the drive does not work, it is because of a hardware problem.

Use compressed air to clean DVD driver.
Clean virgin DVD surfaces.
Use commercial grade cleaner for DVD drive.

If you are using 2 hard drives then install Fedora to the 2nd drive. When you boot up it will ask you which os you wish to boot into. Hope this helps.