I have the weirdest of problems with my DS4 and HDDs
I recently upgraded my HDD storage with two 400 GB Samsungs and odly enough, after intensive data transfer (> 5 GB ) between the drives, one of them will reduce its data speed to 3 MB/s...
I've tried the usual fixes such as new bios/chipset drivers, shuffling the SATA cables, disconnecting some of the drives, re-installing Windows but to no avail. When I connect any of the drives to a PCI SATA controller (2x) they work just fine. Also, there are no problems with HDDs connected to the purple connectors on the board.
The issues kicks in only with drives connected a yellow SATA port.
I've come to the conclusion that the SATA controller on the mobo may be the culprit since any of the drives will work so long as it's not connected to yellow SATA.
If I uninstall the Intel SATA driver, the problem is fixed but only until the next large data transfer.
I've had many years of fiddling with computers but have never seen/heard of such a problem before. Any help is greatly appreciated!