jyavenard wrote a post that allows a person to MOUNT the hidden Kindle partition (he just did not know that he did).
If you look at his post:
http://jyavariousideas.blogspot.com/
You get the first part.
Once you know THAT, you can make a symbolic link to the Kindle rootfs.
On a Mac, you can edit the mountlist (/volumes).
I wrote a simple program that allows me to graphically Telnet into the Kindle's hidden partitions and Drag & Drop files where I want to.
So,

jyavenard
By default, the Kindle will mount /mnt/us kindle partition.
But to gain mount (or gain access to) the hidden Kindle partitions, you need a symbolic link or a GUI program to emulate a link. I chose to write my own as I did not like most of the GUI telnet clients that I found.
My only problem now is that the Kindle RE-SETS the telnet connection after a few minutes.
Anyone have the same issue - and solved it?