Well I've been trying to get my 1TB WD SATA drive hooked up to my AppleTV for a few days now and I'm running into random issues. In case it matters, I'm running OS 10.5.7 and the most recent AppleTV software (not sure what it is these days). I've been successful connecting the HD to the AppleTV via random cables and converters and everything seemed to be running fine using these instructions. That is until I tried to Factory Reset the unit and I got an error message saying the AppleTV couldn't reset. Also, the free space on the 1TB HD was not being seen, but rather the 149GB I had originally started with. It seems like a partitioning issue but I don't know enough about HDs to know what's going on. I tried erasing and installing a few other times to no avail. Now I'm having issues with the initial formatting of the HD and can't seem to get through the first few steps of installing the disk images onto the new HD. During the original setup I ran into the error message "newfs_hfs: /dev/rdisk1s4: partition size not a multiple of 4k." Has anyone been successful connecting a SATA drive to the AppleTV? If so, I could sure use some help. The most overwhelming questions I'm running into seem to be: 1) What format does the 1TB HD need to be in to get things going? 2) Which is the better method ... creating a full disk image of the AppleTV or creating the EFI.dmg and Recovery.dmg files? 3) Any idea what the situation is with the "newfs_hfs: /dev/rdisk1s4: partition size not a multiple of 4k" error? 4) Why do I keep running into issues with the factory recovery? Thanks in advance for your help and suggestions. Unfortunately I don't know much about the inner workings of what's going on, but have been following what I've found on these forums.