Free Harddisk Drive Boot (FHDB) is basically FMCB that gets installed onto the PlayStation 2 console's HDD unit. It does everything like FMCB does, but is meant to be used with the Sony HDDOSD (Browser update v2.00).
This image will overwrite the first 7.5GB of the HDD you write it to. Make sure you back up any data in the first 7.5GB of the HDD you write it to before you apply this image. Neither I, nor the developers of any included software, are responsible for any damage resulting from use of this image.
This is only for use with a fat PS2 with network adapter and HDD. This will not work with virtually all slims (unsure if it will work on the earliest slims when soldering an IDE header to the motherboard, as with "HD Combo" etc, feel free to try if you have such a setup).