The three most notable things that hard drive performance will effect is:
Two major factors that impacts computer performance related to the hard disk drive are how the file is/files are scattered across the hard drive (known as fragmenting) and the location on the drive. Fragmenting makes the hard drive have to scan more to get the "file in question's", and location on the hard drive is because the further out from the center of the disk the data is, the faster fetching the data will be (Statistically data saved on the outmost edge is twice as fast as data on the inside
The capacity of the hard drive has no bearing on performance. The rotational speed of the drive, as well as the size of it's cache, however, do often have a noticeable impact.
You can use compression, but it can also affect the performance of the disk.
Replacing the hard drive with a SSD (Solid state drive) would improve performance.
No. Partitioning is the process of creating a section of a hard drive that is read as a separate drive by the computer (For example, if you have a 100GB C drive, you can split that into a 70GB C drive and a 30GB D drive). Fragmentation is the process overtime where the files on a hard drive become disorganized and can eventually affect the performance of the computer.
Do a Defrag. and a Disc clean-up
Defragment your hard drive. Be careful though...
A larger hard drive will increase the overall speed and performance of your computer.
Installing a second hard drive in your system will have an immediate impact on system performance if your system is memeory bound?
A virus can affect a computer in many ways. From simply freezing the screen - to writing vast amounts of gibberish data to the hard drive, filling it up.
S.M.A.R.T. System
yes, it might cause it to slip.
Hard drives can make a big difference in computer performance. Consider a solid-state drive if you need quick drive access.