32 Bit Transfer Mode
Possible values of an option:
The option description:
The option defines, whether will be used 32-bit ([Enabled]) a data interchange mode by the standard IDE/SATA-controler of a chipset (for old computers — simply IDE-controler of a chipset) or the controler will be restricted to slower 16-bit mode ([Disabled]). In the first case the controler before sending of the data on bus PCI (or on internal buses of a chipset) unites two 16-bit words in one double word, reducing, thus, loading on the bus (at reception of the data all happens just what isn’t needed — the double 32-bit word will be transformed to two 16-bit). In the second — the data is transferred as is, increasing an amount of operations on the bus is equal twice. And though in the majority of versions BIOS by default it is offered to disconnect a 32-bit mode of a data interchange, its switching-on is rare when leads to any problems.
As exception out-of-date operating systems, for example Windows NT can serve.
Actually the 32-bit mode of a data interchange concerns, more likely, to bus PCI (or to internal buses of a chipset), rather than to drives. Digit capacity of bus PCI — 32 bits (at internal buses of a chipset, probably, and more), as allows to pack two 16-bit portions of the data arriving from or to the drive (interfaces IDE and, as consequence, SATA — 16-bit) into one 32-bit.
Other options identical to destination: