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I used ubuntu and windows in dual boot and deleted ubuntu so I ended up still having grub2. When I install secure boot this prevents grub2 from starting and I can boot into windows. When I disable secure boot (for example to boot a liveCD of ubuntu) it starts the grub2 command line (I think it is emergency mode) and I cant boot anything. I tried everything: I used a windows 10 repair dvd and used bootrec - didnt work I used several programs including easybcd, mbrfix, dbr, etc. - didnt work I tried using the bootsect in the cmd - didnt work I tried using grub2 to boot windows - didnt work

What else can I do to get rid of it? If you need anymore information feel free to ask. Thank you very much for your help

Ilovescience
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  • Possible duplicate of Uninstall Grub and use Windows bootloader – pixelherodev Aug 06 '17 at 15:01
  • This is no duplicate I read that thread before and tried everything they wrote (see question) but nothing worked, so please dont mark it as a duplicate! – Ilovescience Aug 06 '17 at 15:09
  • If UEFI, you should just be able to set Windows as first in UEFI boot order. But you may want to remove ubuntu entries from UEFI NVRAM/menu and /EFI/ubuntu folder from ESP - efi system partition. http://askubuntu.com/questions/63610/how-do-i-remove-ubuntu-in-the-bios-boot-menu-uefi or: https://askubuntu.com/questions/794725/can-i-remove-windows-boot-manager-from-dedicated-ubuntu-computer/795341#795341 – oldfred Aug 06 '17 at 15:23
  • Thank you for your quick answer. I am accessing my efi folder and it shows 252,4mb used but when I open it the folder/drive is empty. I am currently only able to use windows – Ilovescience Aug 06 '17 at 15:52
  • Ah I figuered it out. @oldfred if you want to post your comment as an answer I will mark it as the one which solved my question. If anyone has the same problem contact me. Thank to everbody paricipating in this thread. – Ilovescience Aug 06 '17 at 16:32
  • @llovescience Did you see this answer? – pixelherodev Aug 07 '17 at 21:01
  • @pixelherodev Thank you for your comment. Yes this was the answer that eventually fixed my problem. – Ilovescience Aug 07 '17 at 21:09

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If UEFI boot, you should just be able to set Windows as first in UEFI boot order.

But you may want to remove ubuntu entries from UEFI NVRAM/menu and /EFI/ubuntu folder from ESP - efi system partition.

How do I remove "Ubuntu" in the bios boot menu? (UEFI)

OR:

Can I remove Windows Boot Manager from dedicated Ubuntu computer?

oldfred
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