[relnotes] [Fedora Project Wiki] Update of "Docs/Beats/Installer" by PaulWFrields

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The following page has been changed by PaulWFrields:
http://fedoraproject.org/wiki/Docs/Beats/Installer

The comment on the change is:
Don't forget to give people the option  to return to faster operation

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  '''Anaconda''' tests the integrity of installation media by default. This function works with the CD, DVD, hard drive ISO, and NFS ISO installation methods. The Fedora Project recommends that you test all installation media before starting the installation process, and before reporting any installation-related bugs.  Many of the bugs reported are actually due to improperly-burned CDs.  To use this test, type {{{linux mediacheck}}} at the `boot:` prompt.
  
-  The {{{mediacheck}}} function is highly sensitive, and may report some usable discs as faulty. This result is often caused by disc writing software that does not include padding when creating discs from ISO files. For best results with {{{mediacheck}}}, boot with the following option:
+ The {{{mediacheck}}} function is highly sensitive, and may report some usable discs as faulty. This result is often caused by disc writing software that does not include padding when creating discs from ISO files. For best results with {{{mediacheck}}}, boot with the following option:
  
  {{{linux ide=nodma
  }}}
+ 
+ After you complete the {{{mediacheck}}} function, reboot to return DMA mode to its normal state.  On many systems this results in a faster installation process from disc.  You may skip the {{{mediacheck}}} option when rebooting.
  
  Use the {{{sha1sum}}} utility to verify discs before carrying out an installation. This test accurately identifies discs that are not valid or identical to the ISO image files.