WD My Book Live OS

WD Legacy Products My Book Live
1

I was wondering what type of operating system is on the WD My Book Live units?  By default, does the WD My Book Live units ship with Linux or some other type of OS. 

2

Linux. Debian distro “lenny” ?

Take a look at:

http://support.wdc.com/product/download.asp?groupid=902&sid=132&lang=en

i.e. gpl-source-mybooklive-02.42.02-012.zip - all available for download.