What's in this directory?

These are files containing the installer and other software for the Debian GNU/Linux operating system. The files in this directory are designed to work on both 32-bit and 64-bit PCs (i386 and amd64).

How do I use these files?

The files here are complete ISO images, ready to use.

Once you have downloaded all the ISO images you want, you will typically need to write them to installation media.

What size and type of media will I need?

The images described here are sized to be written to writeable DVD media at a minimum, but may be written to larger media if needed. For extra convenience, these images may also be written directly to a USB stick. So long as your computer will boot directly from that USB stick, it should start the Debian installer that way. The first DVD in this set is also deliberately limited in size so it should fit on a standard-sized 4GB USB stick.

The update files here are extra convenience files for people updating from previous versions of Debian. If you are installing fresh, you may safely ignore them. More details...

How can I verify my download is correct and exactly what has been created by Debian?

There are files here (MD5SUMS, SHA1SUMS, etc.) which contain checksums of the images. These checksum files are also signed - see MD5SUMS.sign, SHA1SUMS.sign, etc. Once you've downloaded an image, you can check:

• that its checksum matches that expected from the checksum file; and
• that the checksum file has not been tampered with.

For more information about how to do these steps, read the verification guide.

Other questions?

See the Debian CD FAQ for lots more information about Debian CDs and installation.

 Name                                     Last modified      Size  Description
 Parent Directory                                              -   
 debian-7.8.0-i386-amd64-source-DVD-1.iso 2015-01-10 16:39  3.7G  
 SHA512SUMS.sign                          2015-01-12 03:07  836   
 SHA512SUMS                               2015-01-12 03:02  171   
 SHA256SUMS.sign                          2015-01-12 03:07  836   
 SHA256SUMS                               2015-01-12 03:02  107   
 SHA1SUMS.sign                            2015-01-12 03:07  836   
 SHA1SUMS                                 2015-01-12 03:02   83   
 MD5SUMS.sign                             2015-01-12 03:07  836   
 MD5SUMS                                  2015-01-12 03:02   75