Installing Debian 7.11

To install Debian 7.11 (wheezy), download any of the following images (all i386 and amd64 CD/DVD images can be used on USB sticks too):

netinst CD image (generally 150-280 MB)

full CD sets

full DVD sets

CD (via BitTorrent)

DVD (via BitTorrent)

CD (via jigdo)

DVD (via jigdo)

Blu-ray (via jigdo)

other images (netboot, flexible usb stick, etc.)

If any of the hardware in your system requires non-free firmware to be loaded with the device driver, you can use one of the tarballs of common firmware packages or download an unofficial image including these non-free firmwares. Instructions how to use the tarballs and general information about loading firmware during an installation can be found in the Installation Guide (see Documentation below).

netinst (generally 240-290 MB) non-free CD images with firmware

Notes

For downloading full CD and DVD images the use of BitTorrent or jigdo is recommended.
For the less common architectures only a limited number of images from the CD and DVD sets is available as ISO file or via BitTorrent. The full sets are only available via jigdo.
The multi-arch CD images support i386/amd64; the installation is similar to installing from a single architecture netinst image.
The multi-arch DVD image supports i386/amd64; the installation is similar to installing from a single architecture full CD image; the DVD also includes the source for all included packages.
For the installation images, verification files (SHA256SUMS, SHA512SUMS and other) are available from the same directory as the images.

Documentation

If you read only one document before installing, read our Installation Howto, a quick walkthrough of the installation process. Other useful documentation includes:

Wheezy Installation Guide
detailed installation instructions
Debian-Installer FAQ and Debian-CD FAQ
common questions and answers
Debian-Installer Wiki
community maintained documentation

Errata

This is a list of known problems in the installer shipped with Debian 7.11. If you have experienced a problem installing Debian and do not see your problem listed here, please send us an installation report describing the problem or check the wiki for other known problems.

Errata for release 7.0

Installation of GRUB bootloader may fail if more than one disk device is available.: When there is more than one disk available during installation (for example one hard disk and one USB stick, as it is commonly the case when booting the installer from a USB stick), grub-install may run into problems: it was reported several times, that the GRUB bootloader was installed onto the USB stick instead of the hard disk containing the newly-installed system.
To avoid running into this, make sure to answer No when the following question is asked during the installation process: Install the GRUB boot loader to the master boot record?; it should be possible to specify the right device at the next step: Device for boot loader installation.
If the installation finished successfully despite a wrong GRUB configuration, it should be possible to recover using the rescue mode of the installer: chroot into the root filesystem, mount any additional boot partition if applicable (like /boot and/or /boot/efi for an EFI system, see /etc/fstab), and run grub-install with the proper device as parameter.
Status: This issue will hopefully be fixed in the second Wheezy point release.
Desktop installations on i386 do not work using CD#1 alone: Due to space constraints on the first CD, not all of the expected GNOME desktop packages fit on CD#1. For a successful installation, use extra package sources (e.g. a second CD or a network mirror) or use a DVD instead.
Status: It is unlikely more efforts can be made to fit more packages on CD#1.
Potential issues with UEFI booting on amd64: There have been some reports of issues booting the Debian Installer in UEFI mode on amd64 systems. Some systems apparently do not boot reliably using grub-efi, and some others show graphics corruption problems when displaying the initial installation splash screen.
If you encounter either of these issues, please file a bug report and give as much detail as possible, both about the symptoms and your hardware - this should assist the team to fix these bugs. As a workaround for now, try switching off UEFI and installing using Legacy BIOS or Fallback mode instead.
Status: More bug fixes might appear in the various Wheezy point releases.
Erroneous firmware prompt with some Intel Wireless cards: If you have an Intel Wireless 6005 or 6205 card then the installer will prompt for the firmware file iwlwifi-6000g2a-6.ucode. This file is not included in the firmware-iwlwifi package and is not actually needed. You must answer no to continue with installation.
Status: This issue is fixed in the first Wheezy point release.
Missing beep at installer startup: For accessibility reasons, a beep should be emitted when the installer’s bootloader is waiting for input. Unfortunately, a bug made it disappear in the first Wheezy Alpha release, and that was only reported right before the third Wheezy Release Candidate.
Status: This issue is fixed in the first Wheezy point release.