Dual boot with Grub Ubuntu 16.04 / Win 10 broke when Win 10 automatically updated to Version 1803 in August, 2018. Windows overwrote the Master Boot Record and the Grub menu has disappeared. Ubuntu HDD partition still exists. How do I repair the MBR, retain Grub, boot Ubuntu 2nd without reinstalling Ubuntu?
5
-
1Are you sure the thing is about MBR? MBR exists in Legacy/BIOS installations only. Any computer from the this decade is likely to be UEFI, not BIOS.– user931000Sep 12, 2018 at 16:49
-
1there are tons of tutorials on google. Just boot a live Linux distro and run grub-install How can I repair grub? (How to get Ubuntu back after installing Windows?), How to reinstall grub– phuclvSep 12, 2018 at 16:51
-
1@phuclv Correct. However, if the system is UEFI then the user just need to change the bootloader back to Ubuntu. I believe the OP described the problem correctly but may be misinterpreting what happened.– user931000Sep 12, 2018 at 16:54
-
Cross-posted to SO, but on topic here– bertiebSep 14, 2018 at 0:46
-
Does this answer your question? Repairing GRUB dual boot Kali and Windows system from "grub rescue>" prompt– karelApr 15, 2020 at 1:49
Add a comment
|
1 Answer
The simple solution in my case was to use the free Boot-Repair software by following the advice at https://sourceforge.net/p/boot-repair/home/Home/
Starting in a Windows 10 Version 1803 environment, I used Rufus to create a bootable USB Drive containing the Boot-Repair-Disk iso file.
- Can recover access to Windows (XP, Vista, Windows7, Windows8, Windows10).
- Can recover access to Debian, Ubuntu, Mint, Fedora, OpenSuse, ArchLinux.
- Can recover access to any OS (Windows, MacOS, Linux..) if your PC contains Debian, Ubuntu, Mint, Fedora, OpenSuse, ArchLinux, or derivative.
The original post making me aware of Boot-Repair came from https://help.ubuntu.com/community/Boot-Repair
Thank you @GabrihelaGarcia @phuclv