A.2. Booting the installer

The debian-cd team provides builds of CD images using debian-installer on the Debian CD page. For more information on where to get CDs, see Section 4.1, “Official Debian GNU/kFreeBSD CD/DVD-ROM Sets”.

Some installation methods require other images than CD images. Section 4.2.1, “Where to Find Installation Images” explains how to find images on Debian mirrors.

The subsections below will give the details about which images you should get for each possible means of installation.

A.2.1. CDROM

The netinst CD image is a popular image which can be used to install stretch with the debian-installer. This image is intended to boot from CD and install additional packages over a network; hence the name 'netinst'. The image has the software components needed to run the installer and the base packages to provide a minimal stretch system. If you'd rather, you can get a full size CD image which will not need the network to install. You only need the first CD of the set.

Download whichever type you prefer and burn it to a CD. To boot the CD, you may need to change your BIOS configuration, as explained in Section 3.6.1, “Invoking the BIOS Set-Up Menu”.

A.2.2. USB memory stick

It's also possible to install from removable USB storage devices. For example a USB keychain can make a handy Debian install medium that you can take with you anywhere.

The easiest way to prepare your USB memory stick is to download hd-media/boot.img.gz, and use gunzip to extract the 1 GB image from that file. Write this image directly to your memory stick, which must be at least 1 GB in size. Of course this will destroy anything already on the memory stick. Then mount the memory stick, which will now have a FAT filesystem on it. Next, download a Debian netinst CD image, and copy that file to the memory stick; any filename is ok as long as it ends in .iso.

There are other, more flexible ways to set up a memory stick to use the debian-installer, and it's possible to get it to work with smaller memory sticks. For details, see Section 4.3, “Preparing Files for USB Memory Stick Booting”.

Some BIOSes can boot USB storage directly, and some cannot. You may need to configure your BIOS to boot from a removable drive or even a USB-ZIP to get it to boot from the USB device. For helpful hints and details, see Section 5.1.1, “Booting from USB Memory Stick”.

A.2.3. Booting from network

It's also possible to boot debian-installer completely from the net. The various methods to netboot depend on your architecture and netboot setup. The files in netboot/ can be used to netboot debian-installer.