First I installed Windows 10 on my system. Then I installed Ubuntu. After the installation is complete, I rebooted and grub came up and I booted into Ubuntu without an issue.
Next I re-booted and went into Windows. Then again tried to reboot and Grub won't show. I was taken directly to Windows. I even picked Ubuntu from the boot menu. Still go to Windows.
In windows, if I open the windows partition editor, it won't show the ubuntu partitions. In my other machines, they are shown as raw. Any idea whats happening? Tried boot repair and also disabled secure boot. Nothing is working :-(