A new harddisk will have no files on it.
If you mean filesystem, it depends on the manufacturer.
Before installing an operating system, you need to consider how big you hard drive is. You also need to consider what types of programs you will be using.
yes all hard drives must be reformatted before installing an operating system.
It is not at all important to do a defrag if you just installed an operating system. It is usefull when you have removed software or just before installing new software.
Assuming that we are only talking about the personal computer (PC) market, before Microsoft's Windows operating systems, Microsoft's Disk operating system, or DOS, was used. Before that, CP/M was a popular computer operating system.
False
This has happened to me once before. This is simply stating that your computer believes that the serial number you entered when installing your operating system is being read improperly. Simply backup all of your files, uninstall your operating system, and install again, the problem will be fixed.
No, you do not, but operating systems are software just like other things, and they take hard drive space, so if you are low on disk space you should clean up a bit before installing a new OS.
Format your computer's hard drive
Yes, unless you use a separate partition.
you computer will be slower than before you install ubuntu....
No, but you should turn off and unplug your computer before opening it for any reason.
Make sure you have all the requirements for the game before installing.