Same problem...
Hello - I have had EXACTLY the same problem as this user has had, but when I boot in to the recovery disk, it says it is locked. I have tried booting using the alt-key, and this takes me to the same place via the internet, but the same thing is happening - it is just telling me the disk is locked, and the HD cannot even be seen or mounted.
Please help, anyone!
Thanks in advance ;-)
>>>>>>>>>>>>> Also, I have used disk utility to 'repair' and am always told that there is nothing wrong with it. The SMART status is verified, so I gather this indicates that this is a system problem rather than the hardware, so all I want to try and do is reinstall the system software (which I gather I can do without affecting my other files. I hope that is correct?) I am not familiar with any of this stuff, but I spoke to someone at Apple who gave me that impression anyway!