"This BIOS feature speeds up hard disk access by transferring multiple sectors of data per interrupt instead of using the usual single-sector transfer mode. This mode of transferring data is known as block transfers.
When you enable this feature, the BIOS will automatically detect if your hard disk supports block transfers and set the proper block transfer settings for it. Depending on the IDE controller..."
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips