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My grub screen was not showing Windows 10 boot option. I tried the command:

sudo os-prober

but it was not able to detect Windows 10. Then I made the following changes to 40_custom file

menuentry "Windows 10 (loader)"{
    insmod part_gpt
    search --no-floppy --set=root --fs-uuid 8600-6723
    chainloader (${root})/EFI/Microsoft/Boot/bootmgfw.efi
}

I typed the uuid of /dev/sda2 in the above menu-entry and updated the grub file using : sudo update-grub

After restarting the laptop I got Windows 10 (loader) option, but after clicking it it gives error " invalid signature ".

Please find below the output of sudo fdisk -l for reference :

image

I am also attaching the output of sudo blkid /dev/sda2 for reference :

sda2

I also tried Boot-Repair, but it didn't work. Boot Info Script

How can I boot into Windows 10 again?

karel
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Jarv Potter
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  • Does this answer your question? [Unable to boot into Windows after installing Ubuntu, how to fix?](https://askubuntu.com/questions/217904/unable-to-boot-into-windows-after-installing-ubuntu-how-to-fix) – karel May 11 '20 at 11:38
  • which answer should I follow – Jarv Potter May 11 '20 at 11:53
  • Try the Rescatux answer and see what happens. Also please upload Boot-Repair's Boot Info Script to Ubuntu Pastebin and post a link to it. – karel May 11 '20 at 11:54
  • [link](http://paste.ubuntu.com/p/tp6CqWkQHJ/) Boot Info Script – Jarv Potter May 11 '20 at 12:02
  • How to change boot mode to EFI? – Jarv Potter May 11 '20 at 12:06
  • There is an answer by Boris that tells how to do that at [Unable to boot into Windows after installing Ubuntu, how to fix?](https://askubuntu.com/q/217904/). – karel May 11 '20 at 12:07
  • Let us [continue this discussion in chat](https://chat.stackexchange.com/rooms/107879/discussion-between-karel-and-jarv-potter). – karel May 11 '20 at 12:08

0 Answers0