That’s why most defragging utilities suggest you close all running programs prior to attempting to defrag. The second most common cause is that the file is in use by some program.
#WHY CANT I DEFRAG MY COMPUTER ON VISTA FREE#
The most common reason files do not get successfully defragged is simply that there’s not enough free space on the hard disk to do so. If there’s not enough room for a second, temporary, copy of a file that needs to be defragmented, then that file cannot be processed. No, that’s not technically necessary, but it makes the defragmenting tool significantly simpler, faster and otherwise more reliable.Īs a result, many, if not most defragmenting tools just require some fairly random percentage of free space, like 10% or 15%. There are several technical approaches to defragging, but most require that you have enough free space on your hard disk for a copy of the largest file that needs defragging. The “problem” that defragging solves is simply that when all those pieces are next to each other and in order, the hard disk has to do a lot less work to access the file. Let’s look at some of the reasons, and some of the ways to force the issue if you still feel you need to.ĭefragging, or more properly, defragmenting, is the process of taking all the parts or “fragments” of a file on your hard disk and making sure that they are physically next to each other, and in order.įiles don’t need to be that way: the first part of your file could be on the outer rim of the hard disk, the next part somewhere on the inner portion, and other parts scattered everywhere in between.
Chances are it won’t impact performance in any noticeable way, and that’s really what defragging is all about: improving performance. It’s not at all uncommon to have some files that refuse to defrag, and that’s quite all right. Actually, this is not necessarily a problem.
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