Bryan J. Smith wrote:
- Multiple ATA devices on a channel conflicting
Right, I forgot this one. Check if you don't have an old cd-drive on the same IDE cable.
- Hdparm optimizing the ATA channel and IDE disk incorrectly
Did you tweak this?
- Many, many others
But in every case I had, when the drive _had_ worked prior without issue, it was a kernel upgrade and that ATA driver. As I mentioned before, there have been many documented cases of this, as well as the politics of the ATA code in the kernel (around 2.4.18-19 IIRC).