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I've uninstalled Ubuntu. Yet it works and every time I switch on the computer I get to choose between windows and ubuntu. Is formatting my disk the only option I have?

praroh
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2 Answers2

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You want to restore the master boot record, which will mean you lose the grub boot manager which is what you are seeing.

http://www.sevenforums.com/tutorials/20864-mbr-restore-windows-7-master-boot-record.html

Adrian
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    Whilst this may theoretically answer the question, [it would be preferable](http://meta.stackexchange.com/q/8259) to include the essential parts of the answer here, and provide the link for reference. – Seth Aug 08 '13 at 15:36
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Using a Windows 7 disk, go to repair option. Open command prompt.

Run:

bootrec/fixmbr
bootrec/fixboot

Restart (don't forget to remove Windows 7 disk!!!). Done.

This basically removes GRUB, the default bootmanager that is installed with Ubuntu to manage dual-boot. Uninstalling Ubuntu removes the OS, not bootmanager, and if you forcibly remove GRUB, your system won't boot. The above method should work for you.

xyz
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