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Reinstalling the operating system is a good idea when you have issues with it that cannot be solved in any other way. For example, if you have malware issues in your PC which have completely taken the operating system in control, then you may not be left with any other choice. A complete reinstall with formatting cleans up everything in the hard drive, gives you a fresh registry and makes you to feel more comfortable to work with.

However, reinstalling may not be a good idea in a lot of other circumstances. For a lot of issues that affect PC's performance, there are always quick solutions.

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Q: Why is it a good idea to reformat and reinstall the operating system?
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Why is it a good idea to reformat and reinstall the operating system before reassigning a computer?

To ensure any transient user settings and latent viruses are not transferred to the new user and reintroduced to the network.


Do you have to reformat when installing an operating system?

No, there is no requirement of reformatting when installing an operating system as you can install more than one operating system on a samePC. So there is no requirement of formatting the older one, even if you are installing a single new operating system only. Then also there is no requirement of reformatting again, formatting decreases the life of PC. ANSWER: Formatting does not decrease the life of your PC. The statement above is correct in that it is not necessary to format before installing an operating system. However, if you are doing a fresh install, formatting gives you a "clean slate" to install the new operating system. Attain the older one, even if you are installing a single new operating system only , then also there is no requirement of reformatting again, formatting decreases the life of PC. GOOD ANSWER: You do not reformat a PC you reformat a Hard Drive Disk. Whether or not you need to reformat your HDD depends on the operating system you wish to install. Some operating systems require different formats like NTFS or FAT32 so sometimes you need to reformat. You can also have more then one operating system on your HDD but to do this you must create a partition. A partition is a reserved area on the HDD which you can dedicate to different things depending on your needs. Generally, when you are installing an operating system you will have to reformat your HDD or create a partition for the operating system to run on. It does not decrease the life of your PC but sometimes during the reformatting process a few megabites will be lost... nothing serious. Most OSes require one partition to be formatted, but that is why you can create multiple partitions.


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