I need step by step guidence to recover grub
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GRUB Help and Reinstalling Ubuntu
86703
Windows 10 Replacing Grub
55876
Restore Windows bootloader
40054
Recover Lost data/partition
123150
How to add Windows to GRUB
25586
How to recover files after deleted my Ubuntu partition?
156812
How to reinstall Ubuntu in dual boot with Windows 10?
3776
How to restore a system after accidentally removing all kernels?
122007
Dual boot. How do I reinstall the Ubuntu partition?
91264
How to reinstall Ubuntu as part of dual boot?
154434
How to restore a missing Recovery HD partition
107012
How to get info on my current GRUB / boot configuration?
96248
Cannot Restore Grub After Windows 8.1 Upgrade
95134
How to undo accidental RAID initalization operation (recover data)?
23908
How can I reinstall GRUB to the EFI partition?
8265
How to fix "error: unknown filesystem. grub rescue>
79692
Grub rescue prompt, repair grub