I have never worked on 9241 myself, but have worked with many hard drives for pc, I know somewhere there is more detail information about
what/which hard drives will work with 9241, Perhaps somebody else can find it for you, sorry I'm not feeling well but I can give one small suggestion.
Make sure the sleep function for drive your installing is turn off.
So the drive does not try spin down after certain set amount of time.
The only way I know would be go to the drive site and see if there any option/drivers that turn sleep off first on PC side,
then have the drive reformatted back under 9241.
It is also possible just that drive may not work with your 9241. But I wish you luck and hope somebody else with have better answer for you,
There is also another thing you may consider, The HDD controller of Main board on your 9241 could also gone bad..
LG 42LD520 42" 1080p,Telus 9241, Yamaha HTR-5250,Xbox 360s,ps3,Asus N617Jq 4gb Win 7 64bit