I have a new 3 terabyte external USB hard drive (Seagate ST3000DM001 in an enclosure). I hope to use it on both my iMac (OS X 10.6.8) and my Linux machines (Kubuntu). Right now this drive will probably be used primarily on the Mac, but that could change in the future; I don't use my Mac that much.
I have not formatted or partitioned the drive yet. What are my best options?
Should I format the drive with the Mac HFS+ case-sensitive option?
Given that I am not familiar with OS X, I would rather do standard stuff on the Mac and non-standard stuff on Linux where I'm more comfortable. That leads me to slightly prefer formatting this drive in a native Mac format. On the other hand, I have several Linux boxes where I could use this drive, so if I do non-standard stuff to mount it, I'll have to do that on each Linux machine.
However, for this question, assume a 50/50 split between use on the two operating systems.
I don't want to purchase any proprietary or commercial software to accomplish this task. And I need read & write access.