|Do you have TWO IDE channels or just one? Your problem is jumpering on both hard drives on the cable. I am not sure that 2.5" drives have jumper settings for master/slave/cable select. |
Look at the back of the drive to the left of the data connector for pins and possibly a jumper. Also look for a label on the top of the 2.5" with a jumper legend on it.
You need to use either Master on your regular drive and slave on the 2.5", or CS (cable select) on both.