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I am trying to install Windows 7 on an old system, which had Ubuntu 12.10 on it. I accessed the drive with a cradle and deleted the partitions off of it, then formatted it to NTFS (For Windows). Popped it back in the system and tried to boot from CD to install Windows 7 and I get:
error: unknown filesystem grub rescue >
How did GRUB even survive the formatting and how can I get rid of it for good so I can do a fresh install of Win 7?