The easiest way to gain better speed is to overclock a processor using a system bus that automatically causes the increasing in frequency of PCI-bus. This procedure may lead to the increased speed while data exchange only to some limits. For example, if the frequency of PCI-bus is higher than 37-40 MHz (a standard frequency is 33 MHz), there may be some failures because the transmitted and incoming data have no time for processing. As a result, some part or even the entire information on the hard disk may be lost. At the same time, the hard disk itself is not affected, except the increased heat.
Another way to increase the speed of reading/writing is using the readahead systems which are nowadays implemented at the hardware level. In this case, if there is some request from the controller for reading a particular sector of the hard disk, not only the requested data block but also the next one are read into its cache. Some hard disks are able to monitor the most commonly-used memory sectors and store some data in a cache, thus optimizing and speeding an access to them.
If there is no hardware support of multi-sector reading and writing, it is possible to use some BIOS settings. But you can use BIOS only if you operate with some outdated operating systems that use the following file systems: FAT, FAT16 and FAT32. If you operate with Windows NT/2000/XP, the usage of BIOS parameters may result in the loss of some information of the hard disk.