9. Making sure. Before installing an operating system, you have to make sure that all the hardware needed to install the said operating system is connected. If your installation will need a floppy disk (for boot disk concerns) and you “forgot” to install the floppy drive, things might get a little more complicated. Turning off your computer again just to install the drive can be much of a hassle (if you do this, pray that some of your hardware won’t be damaged).
10. Repair install. If you are using Windows as your operating system, running a repair install is recommended rather than replacing the files through new installation. If for example, your computer does not detect any prior installed OS and asks you if you wish to reformat your hard drive, you must stop the installation. You might have made a mistake in the mounting or connecting the wires and reformatting it will only worsen the scenario (you might lose all the files inside your hard drive). Turn off the computer immediately and troubleshoot.
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