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I had previously dual-booted Ubuntu 13.10 with Windows 8. Then I upgraded it to Windows 8.1. Since then my GRUB has not been appearing. I started Ubuntu from my bootable USB drive and ran boot repair. It initially restored the GRUB. I even upgraded it to 14.04. The GRUB appears as long as I keep using Ubuntu. Even if I once start Windows from the GRUB, the GRUB menu does not appear on the next boot. It directly loads Windows.

Here is the link to my boot info summary http://paste.ubuntu.com/7643346

user293471
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2 Answers2

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It looks like a Windows 8.1 installer overwritten the GRUB in the MBR with Windows boot loader. Fix is easy, just follow the steps in Ubuntu Help - recovering Ubuntu after installing Windows and you will have GRUB with operating system choice again.

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First reload Windows MBR or boot the Windows OS and uninstall EasyBCD , this will delete it's MBR as EasyBCD MBR is easy to penetrate then, download Ubuntu 14.04 fresh version and make a live USB FLash and reinstall the Ubuntu system this will create a new MBR

I recommend you to create a partition for ubuntu with atleast 100 GB free space and format the old ubuntu partition,then install new fresh copy of ubuntu 14.04 LTS

Chinmaya B
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