Based on my experience, screwing with permissions on a global scale = trouble. I mean not only in UNIXes, but also Windows…
The only thing you’ll be able to do is (in a nutshell):
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open your MBL and connect the drive via a SATA cable (internal or USB, doesn’t matter). See this guide ( http://forums.whirlpool.net.au/archive/2032705).
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get your data through a UNIX-based recovery solution that can read ext4 (I personally use SysRecCD for its relatively small download size ( http://www.sysresccd.org/) and its heap of tools.
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put your data in another drive
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debrick your MBL using this guide ( http://community.wd.com/t5/My-Book-Live/GUIDE-Debrick-MyBookLive-v2-0/td-p/567582)
Hope that helps …
And before you ask… I’ve did my own share of research, and no, there is no other solution than a fresh format.
You have to crack it open.
*ps: please note that I’ve never experienced this thing in my MBL, but I did the same mistake twice, back then in my Red Hat days, and in my first Win8 x64 install.
