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  1. I have installed Windows 10
  2. I have installed Linux Mint Silvia and I have chosen a device for boot loader installation - sda.
  3. There is not Windows 10 in grub menu when the system starts
  4. I have booted via Linux Mint live USB.
  5. I Do step by step https://howtoubuntu.org/how-to-repair-restore-reinstall-grub-2-with-a-ubuntu-live-cd
  6. But it still no Windows 10 in grub menu
  7. I have booted via live windows 10 USB.
  8. With restoration tools, I have chosen the command line
  9. I have fixed Mbr by console command bootrec /FixMbr
  10. Ok, windows 10 is loading by there is no Grub.
  11. I have repeated steps 4 and 5
  12. There is no result

Also, I have tried to change grub config with this answer https://askubuntu.com/questions/661947/add-windows-10-to-grub-os-list#answer-977251 - But in this case, There is Windows 10 - but when I chose - I will recursively going to grub

And with this answer https://askubuntu.com/questions/661947/add-windows-10-to-grub-os-list#answer-890562 I have an error message when chose Windows 10 - There is no bootmgr directory

Thanks @Kinnectus for help

Also, I have tried

sudo os-prober

And getting

/dev/sda1:FreeDOS:FreeDOS:chain /dev/sda2:FreeDOS:FreeDOS1:chain

And then I have tried

sudo update-grub

And getting

Generating grub configuration file ... Found linux image: /boot/vmlinuz-4.10.0-38-generic Found initrd image: /boot/initrd.img-4.10.0-38-generic Found memtest86+ image: /boot/memtest86+.elf Found memtest86+ image: /boot/memtest86+.bin Found FreeDOS on /dev/sda1 Found FreeDOS on /dev/sda2 done

Unfortunately - there is not Windows 10 in grub menu

Also, I have fdisk output.

Device Boot Start End Sectors Size Id Type /dev/sda1 2048 16779263 16777216 8G c W95 FAT32 (LBA) /dev/sda2 * 16779264 33556479 16777216 8G c W95 FAT32 (LBA) /dev/sda3 33556480 770219115 736662636 351,3G 7 HPFS/NTFS/exFAT /dev/sda4 770220030 976771071 206551042 98,5G 5 Extended /dev/sda5 770220032 976771071 206551040 98,5G 83 Linux Partition 4 does not start on physical sector boundary.

There is an issue. Maybe the problem is with this issue?

Please, help me, I am stucking with this a whole day. I completely have no idea, what am I doing wrong.

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1
  • First of all they are on different hdd/ssd, if not check windows hdd/ssd if there a vfat partion . if you not found any the best solution it reinstall windows, it's brutal but the easy way Commented Mar 25, 2024 at 4:48

2 Answers 2

Reset to default
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  1. Boot to your Linux
  2. Open a Terminal window
  3. Type: sudo os-prober
  4. If the results identify a Windows 10 install, type sudo update-grub which will update the GRUB entries and add it
  5. Reboot your computer and test to see if Windows 10 is a new option to select.
  6. End of instruction.
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  • 3
    os-prober IDs another OS, but not Windows, but the partition is there, undisturbed. What can I do to boot Windows? I beleve the problem is that Windows is hibernated, but if I can't login, how do I unhibernate it? Commented Jan 20, 2020 at 13:46
  • 1
    os-prober worked great but grub menu was not showing. It took this: GRUB_TERMINAL=console and GRUB_TIMEOUT_STYLE=menu in /etc/default/grub. As always, don't forget sudo update-grub. Ubuntu 20.04.2 with MATE desktop (askubuntu.com/a/1230221/652884) Commented Jul 11, 2021 at 17:58
  • awesome! actually what you need after restoring acronis image of ubuntu partitions) Commented Apr 10, 2022 at 13:18
  • update-grub is an alias of sudo grub-mkconfig -o /boot/grub/grub.cfg if that saves anyone else getting a "command not found" Commented Oct 27 at 7:58
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Try Boot-Repair tool. It seems easy and working in most cases

See details in answer https://askubuntu.com/a/661954/728585

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2
  • Why, how might it help without needing to click the link to see it for the part you got working? Commented Jul 10, 2020 at 0:55
  • This worked for me and solved several problems I didn't know I had. Allowed me to boot at least from Ubuntu, however, didn't solve the 'add windows to grub' part. Commented Mar 17, 2024 at 18:39

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