What HD format do I use for Time Machine

Hi guys,
I need to clean up my external HD and reformat it before using it with Time Machine. Just wanted to know which format method to use.
In Disk Utility it offers the following:
Mac OS Extended (Journaled)
Mac OS Extended
Mac OS Extended (Case-sensitive, Journaled)
Mac OS Extended (Case-sensitive)
I'm confused. Which one should I use?
Thanks for your help,
Bruce

it should be mac os extended journaled provided your main drive has the same format. if the main drive is case sensitive, use case sensitive for TM too. also, it should have GUID partition scheme for an intel mac. when you are reformatting the drive (use the "partition" tab in Disk Utility) you can set the partition scheme by clicking on the "options" button.
Message was edited by: V.K.

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