How do I remove ubuntu from a windows 7 machine without the recovery disk?
Solution 1:
Why would you want to keep Ubuntu bootloader (GRUB) if you're removing Ubuntu? I'm not sure it's possible because I believe GRUB stores some of its files on the partition you're going to remove.
I believe you need to re-install Windows boot loader, then you just boot into Windows and delete Ubuntu partition using standard Windows tools. You may be able to resize the windows partition to take up the free space or create a new NTFS partition there.
(as such, the question turns out to be totally unrelated to Ubuntu... you can do everything in Windows)
Solution 2:
google for easy bcd and install it while in windows. With this program you can create the MBR needed for the windows onls system. After that you can delete ubuntu partition and you are fine.
Solution 3:
You could also try to create recovery disc: howtogeek.com/howto/5409/create-a-system-repair-disc-in-windows-7/ if that seems more convenient to You.
If needed You can use Windows bootloader. In menu start write msconfig and press enter. Than in boot options You have to find option: other systems display time or something similar. Set value to 30 sec. regards