How to remove Ubuntu GRUB bootloader from Windows 10
This is for those with UEFI who have deleted the Ubuntu partitions before removing grub . You will be doing this from Windows 10 . No bootable media required. Where bootrec /fixmbr, bootsect /nt60 and the Ubuntu live with the boot-repair suggestions have failed, this has worked for me: Run a cmd.exe process with administrator privileges Run diskpart Type: list disk then sel disk X where X is the drive your boot files reside on Type list vol to see all partitions (volumes) on the disk (the EFI volume will be formatted in FAT, others will be NTFS) Select the EFI volume by typing: sel vol Y where Y is the SYSTEM volume (this is almost always the EFI partition) For convenience, assign a drive letter by typing: assign letter=Z: where Z is a free (unused) drive letter Type exit to leave disk part While still in the cmd prompt, type: Z: and hit enter, where Z was th...