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2

Uninstalling Ubuntu from dual boot / changing bootloader

rated 0 times [ 2] [ 0] / answers: 1 / hits: 7941 / 3 Years ago, wed, june 2, 2021, 8:10:22

I have a Win/Ubuntu 11.10 dual-boot setup, where I am running the OSes on separate partitions of my laptop HDD. I assume the best method of uninstalling is 'simply' a matter of deleting the Ubuntu partitions -once I've made sure control is given to the Windows bootloader instead of grub after POST.

The question is: How do I do that?

Stuff I've tried:

I tried the boot-repair CD (https://help.ubuntu.com/community/Boot-Repair), but that was a bit beyond my abilities to figure out if I could do it with that tool :/.

I also tried EasyBCD (http://askubuntu.com/questions/66070/how-to-set-windows-bootloader-as-default-bootloader). It couldn't identify my ext3 partitions, let alone change the bootloader.

Lastly, I tried installing startup-manager in Ubuntu, and using that to set the Win7 bootloader as default. But upon restart, it still loads grub.

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answered 3 Years ago heaco · Accepted Answer

Step1

Boot into Windows and right click on My Computer.

Go to Manage > Disk Management.

Delete the Ubuntu installed partition and space reserved for swap. (If you want to use the space in Windows, format it and create a new partition. Or you can do it later.)

Step2

Reboot the computer.

Go to BIOS.

Set the boot media to CD/DVD

Put the Windows 7 DVD (or recovery disk) into the drive.

Boot from the DVD

Step3

Start windows repair (if you use windows 7 DVD or if you are using recovery it will automatically show repairing option)

Allow the utility to repair startup.

If utility found a error and fixed it reboot the machine and enjoy!!

If it failed follow step 4

Step4

Open command prompt in recovery mode.

Type diskpart and hit enter

Then type list disk and hit enter

Then select your disk (you can find it by size) - use select disk x to select the disk. Replace x with the relevant number.

Then type list part and hit enter.

Then select primary disk with mb in size (not in gb) - use select part x to select the part. Hit enter.

Then type active and hit enter.

Close the command prompt and again run the startup recovery tool.

Enjoy!!!