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Introduction

The Fedora distribution is provided in the form of ISO 9660 standard filesystem images. You can copy these ISO images onto either CD or DVD media to produce a bootable disc.

Before you can install Fedora on a computer, you must transfer, or burn, the ISO files to blank disc media (CD-R/RW or DVD-R/RW). This document describes the procedure for burning these files using a few common tools. This document assumes that you have no experience with Linux, and that you are using Microsoft Windows for the purpose of downloading and burning the files.

Downloading

The ISO files are large, and it may take a long time to download them, especially using a dial-up modem. You may want to use a download manager.

Choosing CD or DVD

Fedora is distributed on multiple CD-sized ISO image files, or a single DVD-sized ISO image file. You can use the single DVD ISO file if your computer meets the following requirements:

• It has a DVD-writable or DVD-rewritable drive
• It has a NTFS drive with sufficient space to hold the image file

To write the DVD ISO file to a disc, your computer needs to have a drive that will write to DVD media. If your computer has a drive that only writes CD media and not DVD media, download the CD-sized files instead.

Some file systems cannot store files larger than 2 GB, such as the DVD image. The commonly-used NTFS file system does not have this limitation, but many other non-NTFS formats do, such as FAT32. To check the format of a drive under Windows such as C:, select the Start menu and then My Computer. Right-click the drive you want to check, and choose Properties. The resulting dialog displays the format for that file system. If you do not have an NTFS drive with enough free space, download the CD-sized files instead.

Create a new directory where you can download all of these files. You need approximately 700 MiB of free space available for each CD-sized ISO file, or approximately 3.5 GiB for the DVD-sized ISO file. This document assumes you have downloaded the files to the folder C:\Documents and Settings\Owner\My Documents\My Downloads\Fedora.

Choosing the ISO Files

The exact files you need from the download server depend upon your system and the version of Fedora you are downloading. The files you need are named in the form of FC-<version>-<arch>-disc<count>.iso, where "<version>" is the version of Fedora you wish to download, "<arch>" is your computer's processor architecture, and "<count>" is the disc number for each of the installation CDs.

The computer processor architecture is usually i386 for 32-bit PCs, including the Pentium and Athlon processor families. The architecture is usually x86_64 for 64-bit PCs, including the Athlon 64 processor family. The architecture is usually ppc for PowerPC computers, including most of Apple's Mac offerings. If in doubt, your system probably requires the i386 versions.

If you are downloading Fedora for a Pentium 4 computer, for example, you need this file:

• F-7-i386-DVD.iso

You should also get the SHA1SUM file to verify that the files you have downloaded are complete and correct. Read further to learn how you do this using the SHA1SUM file.

Validating the Files

Errors can occur during the download, even if your download manager reports none. Therefore it is very important to check that the files have not been corrupted in any way. This is the purpose of the SHA1SUM file. It contains one line for each of the available ISO files with a content verification code called a hash computed from the original ISO files.

BitTorrent Automatic Error Checking
BitTorrent automatically performs this error checking during downloads. If your Bit<Torrent application reports all files have been successfully downloaded, you can safely skip this step.

Validating in the Windows Graphical Environment

There are a number of free (as in cost) products available for file validation and hashing that have point and click interfaces. Here are links to a few of them:

• HashCalc: http://www.slavasoft.com/hashcalc/
• eXpress CheckSum Calculator (XCSC): http://www.irnis.net/soft/xcsc/

Follow the instructions provided to install the program. When you run the program, use the file selection tools provided to select your downloaded ISO image files. Then select the SHA-1 algorithm for calculation, and run the tool. The program takes some time to complete, since it must read the entire ISO file.

Open the file SHA1SUM with a text editor, such as WordPad, to display its contents. Make sure the hash displayed by the hash tool for each of the downloaded ISO files exactly matches the corresponding hash in the SHA1SUM file.

If all of the hashes match, you can then burn the ISO files to media. If a file does not match, you may have to download it again.

CAVEAT EMPTOR
The Fedora Project and Red Hat, Inc. have no control over external sites such as the ones listed above, or the programs they provide.

Validating at the Windows Command Prompt

To check the files using the command prompt, you need to download the program sha1sum.exe. For instructions and the link to download the program, refer to http://lists.gnupg.org/pipermail/gnupg-announce/2004q4/000184.html.

The sha1sum.exe program computes and displays hashes. To use it, save sha1sum.exe to the same directory as the ISO files. Select Run... from the Start menu and then enter cmd for the name of the program to start a Command Prompt window. Then change into the download directory. Run sha1sum with each ISO file like this:

cd "C:\Documents and Settings\Owner\My Documents\My Downloads\Fedora
sha1sum.exe F-7-i386-DVD.iso

The program takes some time to complete, since it must read the entire ISO file.

Open the file SHA1SUM with a text editor, such as WordPad, to display its contents. Make sure the hash displayed by sha1sum.exe for each of the downloaded ISO files exactly matches the corresponding hash in the SHA1SUM file.

If all of the hashes match, the ISO files can be burned to media. If a file does not match, you may have to download it again.

Burning

Burning a CD from an ISO is not always obvious to the users of Windows. Windows applications often let users burn data discs by simply dragging the source files into a box and clicking the Burn button.

In reality, though, the burning software performs two operations. First, it creates an ISO 9660 standard image, just like the ones used to install Fedora, from the source files that were dragged into the box. Second, it transfers that ISO file onto the blank CD. If the original source file was already an ISO image, the resulting CD is not usable for installation purposes.

To create the Fedora installation CDs, it is vital that you only perform the second step with the Fedora ISO files. The steps required to do this using several popular CD burning applications are listed below.

Using The ISO Recorder V2 Power Toy

Obtain and install the ISO Recorder power toy from the http://isorecorder.alexfeinman.com/isorecorder.htm web site.

• In Explorer, right click on the first Fedora Code ISO file
• In the context menu, select "Copy image to CD"
• Follow the steps given by the "CD Recording Wizard" pop-up
• Repeat for the remaining ISO files

Using Roxio Easy Media Creator 7

• Start "Creator Classic"
• Select "Other Tasks"
• Select "Burn from Disc Image File"
• Choose the first Fedora ISO file and burn it
• Repeat the above steps for each of the other ISO files

Using Nero Burning ROM 5

• Start the program
• Open the "File" menu
• Select "Burn Image"
• Choose the first Fedora ISO file and burn it
• Repeat the above steps for each of the other ISO files

Using Nero Express 6

• Start the program
• Select "Disc Image or Saved Project"
• An Open dialog appears. Select the first Fedora ISO file. Click Open.
• The next screen allows you to select Writing Speed. You should set this to 4x for DVD, or 16x for CD, for best performance.
• Click Next to Burn
• Repeat the steps above for the other ISO files

Testing Your Discs

In order to be certain the CDs will work on your system, you may wish to burn only disc 1 and then perform the following process before burning the others:

• Following the directions from your computer's manufacturer, make sure your computer's BIOS is set to boot from the CD drive.
• Reboot the computer with disc 1 in the CD drive. The boot menu for the Fedora installer appears.
• Press Enter.
• Follow the directions on-screen until you are asked if you would like to perform a media check.
• Conduct the check against the first disc. If the check succeeds, your disc is correct. At this point the installer has changed nothing on your computer. Remove the Fedora installation disc and restart the system so that the computer boots into Windows.
• Burn the other three ISO images. After burning the other discs, you can repeat the media check to test them all.

Comments and Feedback

If you have suggestions for this document, send an email to relnotes AT fedoraproject.org. We welcome directions for other tools and platforms.