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- Dual boot Linux with Windows 7 4 answers
I installed Linux OS on the PC. After that, I installed Windows 7. Now, I am unable to load Linux again. How to install Grub in Windows 7?
You'll have to boot to an Ubuntu live CD to reinstall grub.
From the tutorial located here:
The easiest way to ensure a dual booted machine is to load Windows first, and then load Linux.
This ensures that GRUB will see all the drives and mount points. On first boot, GRUB will load, and then you can then arrow down and choose which OS to boot. Your Windows boot drive will be displayed last in the listing, behind Linux.
Even better, to avoid rebooting your machine to get from one OS to the other, load Windows, download VMware Player (it's free), and then load Linux as a virtual machine (the other way around, is OK too, however the Linux version of VMplayer is a little tricky, so you might want to use VirtualBox).