It was definately the Hard Drive Preservation. No hiccups at all now. So using a SATA drive with the IDE>Sata converter obviously brings in some new parameters when it comes to the source command that comes from the PVR board. So basically it will park the SATA drive but can not wake it again... hmmm. Well makes no difference to me, the drive is running super cool all the time, and I disable all my PC's hibernation and HDD power down features while leaving my PC on 24/7, and those drives run for years...
Besides now to change to a new drive again will be so easy.... Wonder what the size limitations are on the PVR? If I had to pop a 1.5TB drive I would get an additional 500 to 600 hours!
Glad it's sorted! Now all that's left to do is to enjoy the upgrade.