Want to add second drive to my hr10-250 leaving the original drive un-touched. After search I found the follwing comment from Lou Jacobs
In any case, the simple way to add a drive is to:
1) connect the drive you want to add to your unit as the SECONDARY SLAVE
2) boot the InstantCake CD and when you get to the first InstantCake screen, hit at the same time
3) now type "BlessTiVo /dev/hdd" and answer "yes" to the question about preparing a new drive for your TiVo
4) install and enjoy
What does "hit at the same time" mean??