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First we start by talking about what is the need for doing partition for a hard disk.With out saying the advantages of having different partitions in your hard disk i will say the disadvantages of having only one partition.Every one saves a lot of important stuff and will also be very careful while surfing internet but in these days it is very easy to get attacked by a virus.So if there is no chance of preventing it, we keep the important stuff away from viruses.i mean if we partition hard disk in such a way that the OS files are kept in a different partition from the important files which we want to store.A virus can be removed if it doesn't attack our OS files some how by deleting the file it attacks or by scanning it using online antivirus softwares or by any wares offline but removing a virus which attacks our system files cannot be removed because we cant delete our system files if we do so it becomes the situation of cutting the branch on which we are sitting so we cant do that.So i recommend you to partition your hard drive so that if virus attacks your system or any other thing happens to your OS your directly format your OS which is in a specific partition by getting no effect to any of your data.I think its enough and i might have bored you.Here is the way to format your harddrive in windows.
While partitioning you may increase your partition size or decrease it.First i will tell you how to decrease i.e. shrink the volume and then i about extending it.
Step 1:
Right click on the My computer icon and click on Manage option and wait until a window opens showing you disk management option in the sidepane it will look like this.Click on the disk management option .
