The SATA 3 Gbit / s (commonly known as SATA II) has a feature particularly appreciated by users: it is backward compatible.
This means that, on paper at least, it should be possible to connect a hard drive without any problems with this type of interface to a motherboard SATA connectors with 1.5 Gbit / s (SATA I), with the only apparent limit to obtain transfers less rapid.
In truth, however, things do not always work exactly as they should: in certain circumstances it is possible that the two components are not able to communicate properly to determine the speed to be adopted, with the disastrous result of the hard drive to make invisible Even the BIOS on the motherboard.
The problem, according to information on the net, seems to affect specifically the motherboard controllers equipped with VIA and SIS models VT8237, VT8237R, VT6420, VT6421L, SIS760 and SIS964: I have personally been able to verify the presence of failure (which manifested itself in various forms including hard drive inaccessible, and instability in access to the device by the operating system) on your PC with the first chip of the list.
See Pictures and Read more : Samsung and disk controller SATA solves the problem
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