How do I fix GRUB after Windows Update?
How do I recover GRUB after installing Windows?
- Run Boot Repair. There are two ways to get boot-repair. First is to create a disk containing the tool like Boot-Repair-Disk.
- Reinstall GRUB. First, boot into your system using any Live Linux Distribution. Open Gnome Disks or GParted, the partition editor.
How do I reinstall GRUB?
Resolution
- Place your SLES/SLED 10 CD 1 or DVD in the drive and boot up to the CD or DVD.
- Enter the command “fdisk -l”.
- Enter the command “mount /dev/sda2 /mnt”.
- Enter the command “grub-install –root-directory=/mnt /dev/sda”.
- Once this command completes successfully reboot your system by entering the command “reboot”.
How to re-install Grub after win10 update?
The Win10 update changed the default boot entry – with UEFI, there is no need to re-install grub. Simply boot into Fedora, go get efibootmgr and run it – it will list all the NVRAM entries – use it to make Fedora the default.
What should I do when I boot from Grub?
You’ll most likely end up in a GRUB command line prompt on the next boot, from where you’ll have to boot to Windows and delete the GRUB EFI Firmware entry or change the order to put the Windows bootloader in the first place. Here is a similar question that can help in this case.
How to delete the Grub EFI boot entry?
Manually delete the GRUB EFI boot entry and/or set the Windows bootloader to the first position before you get rid of Ubuntu. This answer to a similar question explains the process for deleting it in Windows. To perform this from Ubuntu, the efibootmgr tool can be useful. Run :- to delete entry XXX.
How to restore boot loader after removing Ubuntu?
Boot to Windows first and use the bootsect tool to replace the GRUB boot sector with the Windows boot sector, and then delete the Ubuntu partition. Run these from an elevated Command Prompt :-