For the Windows 7 operating system preinstalled typical the default scheduler settings for a weekly check and Defrag all drives. On the one hand, it's convenient and you always use the maximum unfragmented data, on the other hand, if you are the owner of a weak computer or laptop, then this activity can seriously slow down your work and rapidly drain the battery of the laptop.
Before defragmentation it is recommended that you exit all programs that are actively using the hard drive. It is necessary to speed up the process and reduce the likelihood of conflict. Next, you need to clear no less than 7% of the drive on which will be defragmented. This can be done by removing some of the massive file and clearing the recycle bin.
Run disk cleanup. For this purpose click with the left mouse button the "start/All programs/accessories/system tools/disk Cleanup". The program will prompt you to select the items for cleaning. In principle, nothing is lost, you can select all.
Will not be superfluous before defragmentation to get rid of garbage in the registry. For this you need to run a program such as CCleaner. After analyzing and cleaning your registry can start the defragmentation.
Next, start a preinstalled system tool via "start/All programs/accessories/system tools/disk Defragmenter". Select the drive and click "Analyze disk". If after analysis of the program shows the level of fragmentation of the disk is less than 10%, you don't have to defragment. If more, feel free to press the button "disk Defragmenter". If this the drive have not been done, it will take a sizeable amount of time. Depending on the disk capacity and computer speed, this may take from 30 minutes to 2 hours.
After defragmentation, you can set up a scheduler for automated process is run at a predetermined schedule. To do this, click the "Configure schedule..." and in the appeared window set the desired timing of the works and engaged the drives. You have created a program can also use a regular system defragmentation, running it from the command line.
If you have a SSD, defragmentation it is not required. Moreover, forced regular defragmentation of the drive will reduce its resource, and if not to failure.