How do I format and external hard drive for my MBP?

I have an external hard drive that I was using on a windows based system. I backed up the contents to dvd's and now I want to format the drive for my MBP? Can someone please tell me the best way to do this?
Thanks.

All you need to do is…
1) Connect the drive
2) Launch Disk Utility
3) Select the drive and go to the partition tab
4) Click on Options… and chenge it from MBR to GUID Partition Table
5) Create a partition using MacOS Journalled
6) Apply the change and you should have a Mac drive

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