Download 5gipl.zip (tested on 5G iPod 30GB)
 

This installer has several features:

• start file is automatically enabled
• Your document is safe:   This installer does not remove your data. All the music, files and settings are automatically taken over.
• Easy to use: As is shown below I deleted options as much as possible. AppleOS is automatically selected as the default OS.
• Quick installation: It takes only 30 seconds or so to complete installation.

Usage:
 

1. Download 5gipl.zip
   Extract the 5gipl.zip.
   There are only two files. 5gipl.exe (installer) and readme.html (document).
   Start 5gipl.exe.

2. Click "Next>"

If a message "iPod is not found" comes out, make sure that your iPod is connected. Sometimes it would be a good idea to restore your iPod with iPod updater.

3. Wait a while. If "Now Installing" blinks, installation is working fine.
  Installing might take a few minutes if your PC does not support USB2. Be patient and just wait.

4. Success. Disconnect your iPod and keep pressing rewind button until iPod Linux starts.