Defrag is the command to move all clusters of a file to contiguous locations. If you don't want to use the command line version, you could go to My Computer or Computer, right click on the drive you want to defragment, go to properties, and choose the option to defragment from there. Or you can go get something like Defragler or another 3rd party defragmentation program.
Defrag c:
defrag 1. Open My Computer. 2. Right-click the local disk volume that you want to defragment, and then click Properties. 3. On the Tools tab, click Defragment Now. 4. Click Defragment
format /c followed by the name of the drive you want to format.
Typically, doing a disk defragmentation (found in Accessories -> System Tools) will accomplish this.
A contiguous file in a computer is one that is placed on a storage drive in such a way that it is in sequential portions of the drive. This is generally regarded as advantageous because it results in better performance by decreasing the amount of time it takes the computer to read the data (compared to when a single file is spread over a larger portion of the drive and not located in contiguous sectors). The performance gains experienced from contiguous files is the best reason to defragment a drive.
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The command used to format a drive is "Format".
Clusters
Defrag
deltree D:\
Contiguous files are files on your hard drive that are all in one place, and not split up ( fragmented ). Sometimes your computer can take one file, and split it into multiple locations on your disk. This is what Defragmenting does. It takes those fragmented files, and puts them together.
It's pretty rare these days, due to the advances in the stages of manufacture for the hard-drive. Bad clusters - are areas of damage on a computers hard-drive. during a diagnostic scan, it's possible to 'mark' these bad clusters, so that the computer bypasses them when it needs to write information onto the disk.