Drive was once used to as a boot recovery for mac osx.  Got a different drive for that now and wanted to use this drive on Windows 7.  When looking at the disk manager, there is a random 200MB partition that was used for the boot recovery for osx.  (EFI System Partition).   To delete this partition in Windows 7, do the following 5 steps.
  1. On the command prompt type diskpart and answer to any possible UAC prompt.
  2. On the new diskpart prompt, type list disk. Note the Disk ### column.
  3. Type, select disk ### (with ### being the disk you wish to delete. Usually the disk with partition 0 with a size of 200 MB)
  4. Finish by typing, clean.
  5. Type exit to exit diskpart