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I’m using Parrot OS in dual boot with Windows 10. One day Windows just stopped booting from GRUB with next error:

/EndEntire
file path: /ACPI(a034d0,0)/PCI(1,1)/PCI(0,0)/UnknownMessaging(17)/HD(1,800,32000,f452754febf9674d,2,2)
/File(\EFI\Microsoft\Boot)/File(bootmgfw.efi)/EndEntire 
error: cannot load image.
I have tried using boot-repair to fix this but it didn’t help. Here is its log: http://paste.ubuntu.com/p/6SXYdWxwxh/

When I try to boot Windows directly from BIOS, the screen just blinks for a second and nothing happens. Linux is working fine.

have tried using boot-repair to fix this but it didn’t help. Here is its log: http://paste.ubuntu.com/p/6SXYdWxwxh/

Secure boot in BIOS is set to off.

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  • Can you not boot Windows directly from UEFI boot menu. Grub only boots working Windows.
    – oldfred
    Commented Jan 24, 2022 at 18:35
  • When I try booting it from UEFI the screen just blinks for a second and nothing happens. Commented Jan 24, 2022 at 21:42
  • If Windows does not directly boot from UEFI boot menu, then that is a Windows issue. You may be able to press f8 to get to Windows repair console after using f12 to boot it. But if not then you need your Windows repair recovery flash drive to fix it. Windows 8/10 UEFI fixes, if no repair flash drive you may be able to download Window installer and use it. superuser.com/questions/460762/…
    – oldfred
    Commented Jan 24, 2022 at 22:13
  • When I try to run bootrec /fixboot command it says that access is denied. Windows auto recovery from installation usb also appears not to be working. Commented Jan 25, 2022 at 17:39
  • Did you delete Windows? While Boot-Repair cannot fix Windows issues, the Summary Report will show details on your installs. Post link to Summary Report in your question above.
    – oldfred
    Commented Jan 25, 2022 at 17:41

1 Answer 1

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Boot Parrot OS and update the GRUB config.

  • First run sudo os-prober to detect installed OSes
  • Then run sudo update-grub to update the configuration.

Reboot and select Windows in the GRUB menu.

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  • Unfortunately that didn’t help. Commented Jan 24, 2022 at 17:49

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