In my new htpc case, I have to have the two hard drives side by side, and not one above the other. One is jumpered as master, and the other has no jumper as it is the slave (both Seagate Barracuda drives). All the IDE cables I have have the long section between the blue connector and the grey connector, and the short section between the grey and black. I thought I'd put the black into the mobo, then connect the primary drive onto the grey one. The slave drive will be connected to the blue connector which now easily reaches it. I booted up with just the primary drive connected, and everything was fine. I powered down, then connected the slave drive to the blue connector. On boot, neither drive is detected. Disconnect the slave drive, and all is well again. I then removed the slave drive and layed it on top of the master drive, and connected the cable with the blue end into the motherboard and the grey connection into the master, and black into the slave. It boots up and runs fine. I even formated the slave drive into NTFS from Windows. So, what's stopping me from turning the cable round? It looks like I'm going to have to buy another cable - despite having half a dozen of them including some nice round ones. Gary.