Recover grub after windows update

Run this in Windows as an administrator:

bcdedit /set {bootmgr} path \EFI\ubuntu\grubx64.efi

Or:

bcdedit /set "{bootmgr}" path \EFI\ubuntu\grubx64.efi

If you are using PowerShel.

Checking Root Account Status

  Checking Local Root Account Status Run sudo passwd -S root : Look for the status letter in the output. An L means the account is locked (...

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