This is the manual on how to install Rockbox on iPod video, just go to http://download.rockbox.org/manual/rockbox-ipodvideo/rockbox-build.html to see the full manual for the iPod video. Just read the manual and find in the contents the part you want to know about.
2.2. Installing Rockbox
2.2.1. Introduction
There are three separate components of Rockbox, two of which need to be installed in order to run Rockbox. The Ipod boot loader. The Ipod boot loader is the program that tells your player how to boot and load the remaining firmware from disk. It is also responsible for the disk mode on your player.
This boot loader is stored in special flash memory in your Ipod. It is already installed on your player, so it is never necessary to modify this in order to install Rockbox.
The Rockbox boot loader. The Rockbox boot loader is loaded from disk by the Ipod boot loader. It is responsible for loading the Rockbox firmware and for providing the dual boot function. It directly replaces the Ipod firmware on the player’s disk. The Rockbox firmware. Similar to the Ipod firmware, most of the Rockbox code is contained in a “build” that resides on your player’s drive. This makes it easy to update Rockbox. The build consists of a directory called .rockbox containing all of Rockbox’ files, which is located in the root of your player’s drive.
2.2.2. Choosing a Rockbox version
There are three different types of firmware binaries from Rockbox website: Release version, current build and daily build. You need to decide which one you want to install and get the version for your player. Release. There has not yet been a stable release for the Ipod Video. Until there is a stable release for Ipod Video, use a current build. Current Build. The current build is built at each source code change to the Rockbox SVN repository, and represent the current state of Rockbox development. This means that the build could contain bugs, but is most of the time safe to use. You can download the current build from http://build.rockbox.org/. Archived Build. In addition to the release version and the current build, there is also an archive of daily builds available for download. These are built once a day from the latest source code in the SVN repository. You can download archived builds from http://www.rockbox.org/daily.shtml.
2.2.3. Installing the firmware
Warning: If your player has 32MB RAM (typically if it has a 30GB harddisk), do not download the Ipod Video 64MB build as it will not work.
Download your chosen version of Rockbox from the links in the previous section.
Connect your player to the computer via USB as described in the manual that came with your player.
Take the file that you downloaded above, and use the “Extract all” command of your unzip program to extract the files in the .zip file onto your player.
Note that the entire contents of the .zip file should be extracted directly to the root of your player’s drive. Do not try to create a separate directory or folder on your player for the Rockbox files! The .zip file already contains the internal directory structure that Rockbox needs.
Note: If the contents of the .zip file are extracted correctly, you will have a folder called /.rockbox, which contains all the files needed by Rockbox, in the main folder of your player’s drive. If you receive a “-1” error when you start Rockbox, you have not extracted the contents of the .zip file to the proper location.
2.2.4. Installing the boot loader
In order to make your player load and execute the Rockbox firmware you have just installed, you will need to install the Rockbox bootloader. Unless bugs are found in the bootloader code, or significant new feature are added, you will only have to perform this step once.
Bootloader installation from Windows
Make sure you are logged into your computer as Administrator, or a user with Administrator privileges and connect your player.
Download ipodpatcher.exe from http://download.rockbox.org/bootloader/ipod/ipodpatcher/win32/ipodpatcher.exe and run it.
If all has gone well, you should see some information displayed about your ipod and a message asking you if you wish to install the Rockbox bootloader. Press i followed by ENTER, and ipodpatcher will now install the bootloader. After a short time you should see the message “[INFO] Bootloader installed successfully.” Press ENTER again to exit ipodpatcher.
Make sure that you have correctly extracted a build of Rockbox so that you have a /.rockbox, which contains all the files needed by Rockbox in the root of your player’s drive and that you have also installed the fonts package – see section 2.2.2 for more information.
Disconnect your player in the usual way. The bootloader is now installed.
2.4. Running Rockbox
Remove your player from the computer’s USB port.Rebooting the Ipod by holding Menu+Select for a couple of seconds until the player reboots. Now Rockbox should load. When you see the Rockbox splash screen, Rockbox is loaded and ready for use.
Note: Rockbox starts in the File Browser. If you have loaded music onto your player using Itunes, you will not be able to see your music because Itunes changes your files’ names and hides them in directories in the Ipod_Control folder. You can view files placed on your player by Itunes by initializing and using Rockbox’s database. See section 4.2 for more information.
2.6. Uninstalling Rockbox
Note: The Rockbox bootloader can start the original firmware on your player. (See section 3.1.3 for more information.)
If you would like to go back to using the original Ipod software, connect the player to your computer, and follow the instructions to install the bootloader, but when prompted by ipodpatcher, enter ’u’ for uninstall, instead of ’i’ for install.
If you wish to clean up your disk, you may also wish to delete the .rockbox folder and its contents. Turn the Ipod off. Turn the player back on and the original Ipod software will load.
Hope this helps...