Although uninstalling any latest operating system from a computer is not practically possible as a complete removal of the OS is required, there can be several workarounds if a computer has a dual boot environment. A computer is in dual boot environment when it has two operating systems installed on it. While making a computer dual boot, it is strongly recommended that each operating system that the administrators plan to have on the PC must be installed at least on a separate partition of the hard disk drive (if not on a separate hard disk drive itself).
After the official release of Microsoft Windows 8, many users installed the new operating system along with the existing Windows 7, hence making the computer a dual boot. After installing Windows 8, if users decide to remove the new OS from the computer, they can remove the operating system without hampering or disturbing the functioning of existing Windows 7. In order to do so, a few tricky steps must be followed very carefully.
Note: Process of uninstalling Windows 8 described in this section does not actually uninstalls the operating system, but it gives a workaround that helps users remove Windows 8 from the computer and allows the system to work with Windows 7 as normally as it used to do, before making the computer a dual boot with Windows 8 installation.
How to make Windows 8 Dual Boot
In order to remove Windows 8 operating system from a dual boot computer that also has Windows 7 installed, step-by-step instructions given below should be followed:
- Start the computer from which Windows 8 operating system is to be uninstalled.
- On Choose an operating system screen, click Windows 7 to boot the computer using Windows 7 operating system.
- Log on to Windows 7 computer with the administrator account.
- On the desktop screen, press Windows + R keys simultaneously to initiate the Run command box.
- On the opened Run command box, type MSCONFIG.EXE command in the available field, and press Enter key.
- On the displayed System Configuration box, go to Boot tab.
- From the available list of installed operating systems, click to select Windows 7 (C:\Windows) : Current OS.
- Once selected, click Set as default button to make the selected Windows 7 operating system the default OS.
- Once done, click to select Windows 8 (F:\Windows). (Where F is the drive letter of the volume on which Windows 8 is currently installed for this demonstration.)
- Click Delete button to delete the entry of Windows 8 operating system.
- Click OK when done.
- On the System Configuration box, click Exit without restart to restart the Windows later.
- On the desktop screen, click Start.
- From the Start menu, click Computer.
- On the right pane of the displayed window, right-click the hard disk drive partition where Windows 8 is installed.
- From the context menu that appears, click Format.
- On the opened format volume box, make sure that Quick Format checkbox is checked under Format options section.
- Click Start to format the selected volume.
- On the displayed warning box, click OK to start the formatting.
- Once completed, on the displayed box, click OK.
- Back on the format volume box, click Close and restart the computer.