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Re-install grub in Debian 8 Jessie

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So I was trying to install Debian Jessie beta 2 (Debian 8) and was not really paying attention what I was doing. It ended up that I don't grub installed.So who do you fix this? As usual in Linux/Debian there so many ways to do this but below are the steps that I have done:
  1. Boot the machine using the boot media, I was using debian-jessie-DI-b2-amd64-netinst.iso and yes I am using VirtualBox.
  2. Select Advanced options | Rescue mode.
  3. Follow text based wizard, change the values as you see fit. I did English for Select a language. Then United States for Select your location. American English for Configure the keyboard. Used debian in Configure the network - note that this does not have to match to the machine that you want to recover.  Left blank for the domain. Then for Configure the clock I selected Central.
  4. In Enter rescue mode, I have selected /dev/sda1 as I only have one SATA HD and I know that the first partition was my root. You probably to make guesses if you want to do quick and dirty fix. Of course you can always mount the partition and check if it looks like a root partition.
  5. In Enter rescue mode, second screen, select Reinstall GRUB boot loader.
  6. In Enter rescue mode, third screen, I did /dev/sda. This will change depending on your specific circumstance. In my scenario it was easy as it was a VM and it was the only operating system on the disk.
  7. Select Reboot the system and you are done.
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