How to remove one operating system from dual boot windows?

Jose Michael



In this age all people know that we can install two or moreoperating systems on the same partition or on same hard drive. For example you can install windows 98 with windows 2000 or Windows XP and also windows XP with Windows vista. You can install both operating systems on the same partition (both on C: drive) or on different partitions (one operating system on C drive and other on D drive). But installing more than oneoperating system on same drive kill the system performance.

In dual operating systems, when you turn on the computer, it gives you a choice of windows 2000 or windows XP to use. Whether you have installed your both operating systems on C drive or one on C drive and other on D drive, system store the root files of the both operatingsystems on C drive, so you can delete one any operating system with editing these root files. There is no any direct method to uninstall oneoperating system; you can do this only with format the partition or delete windows folder after editing the “Boot.ini” file.

The given steps to edit the Boot.ini to delete one operating system:
In case any problem after editing, first backup the Boot.ini file.

Click Start button then type sysdm.cpl in Run option then press Enter for next.

Now on the Advance tab, click on Setting under the Startup and Recovery area.

Under the System Startup area, click on Edit button, and you will get a Notepad editable file.

If you have installed two operating systems (windows XP and Windows 2000) on same hard disk then it will look as in Boot.ini.

[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Windows XP Professional" /fastdetect
multi(0)disk(0)rdisk(0)partition(2)\WINNT="Windows 2000 Professional" /fastdetect

According to above example, if you want to delete windows 2000 then delete the “multi(0)disk(0)rdisk(0)partition(2)\WINNT="Windows 2000 Professional" /fastdetect” line and save the file.

But if you want to delete windows XP then delete the “multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Windows XP Professional" /fastdetect” line and save the file.

At the end delete the operating system folder that you no longer require or format the drive where the other operating system contains.
Now close the all programs and restart your computer after any changes to go into effect.
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