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% $Id$

\warn{Before starting this procedure, ensure that you have a copy
of the original \playerman{} firmware. Without this, it is
\emph{not} possible to uninstall Rockbox. The \playerman{}
firmware can be downloaded from
\url{http://www.tacp.toshiba.com/tacpassets-images/firmware/MESV12US.zip}.\\}

Installing the bootloader is only needed once. It involves replacing the
existing firmware file on your \dap{} with another version.
When running the original \playerman{} firmware (a version of Windows CE), it is
only possible to connect the \dap{} to a PC in ``MTP mode'', which hides
the actual content of your \daps{} disk and provides restricted access
to its contents.
In reality, the \daps{} hard disk contains two partitions, a small
(150MB) ``firmware partition'' containing the \daps{} firmware (operating
system), and a second ``data partition'' containing your media files. The main
firmware file in the bootloader partition is called \fname{nk.bin}, and
this is the file that is loaded into RAM (by the \daps{} ROM-based
bootloader) and executed when your \dap{} is powered on.

\subsubsection{Bootloader installation from Windows}

\begin{enumerate}
\item Download \fname{sendfirm.exe} from \fixme{add download location}.
\item Download the bootloader (\fname{nk.bin}) from \fixme{add download location}.
\item From the command prompt, enter the directory into which you downloaded
\fname{sendfirm.exe} and \fname{nk.bin} and run:
\begin{code} 
    sendfirm.exe nk.bin
\end{code}
\item After a successful installation, your \dap{} will immediately reboot
and (because it is still connected to your PC) enter the Rockbox bootloader's
``USB Mass Storage'' mode, which exposes your \daps{} disk to your computer
as a standard USB Mass Storage device.
\end{enumerate}

\subsubsection{Bootloader installation from Unix (Linux / Mac OS X)}

\begin{enumerate}
\item Download \fname{sendfirm} from \fixme{add download location}.
\item Download the bootloader (\fname{nk.bin}) from \fixme{add download location}.
\item From the terminal, enter the directory into which you downloaded
\fname{sendfirm} and \fname{nk.bin} and run:
\begin{code} 
    chmod +x sendfirm 
    ./sendfirm nk.bin
\end{code}
\item After a successful installation, your \dap{} will immediately reboot
and (because it is still connected to your PC) enter the Rockbox bootloader's
``USB Mass Storage'' mode, which exposes your \daps{} disk to your computer
as a standard USB Mass Storage device.
\end{enumerate}

\subsubsection{Fixing the partition table}
The factory-standard partition table on your \daps{} disk is technically
invalid, and the Linux kernel (and maybe other operating systems) rejects it.
To fix this, you need to use the fdisk utility to correctly set the ``bootable
flag'' field to a valid value (it doesn't matter if this is true or false).\\

\note{Windows does not seem to mind this, so if you only use your \dap{} with
Windows the following steps are not necessary.\\}

Assuming your \dap{} is appearing as /dev/sdz (the output of the dmesg
command will show the log messages including the device node assigned to
your \dap{}), type the following:

\begin{code}
    fdisk /dev/sdz
    a
    1
    a
    2
    w
\end{code}

After exiting fdisk, you may need to unplug and then reattach your \dap{}
in order for it to be recognised by your computer.