uskibik

Hi camellion,

 Thanks for info and suggestions. I found a post on another forum about using a software based on chameleon bootloader (link) and I got it to work about an 1h ago using your Extra and Extensions. 

Hello camellion,

  Thank you very much for the guide and Extras for T410 - I was able to run Mavericks on my T510. My request is if you or anyone else can suggest how to install Yosemite on the same machine. It looks like myHack is still not updated to install 10.10 version.

 Thanks.