I'm installing Linux Mint on an HP Laptop with Windows 7 for a dual boot

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http://www.linuxquestions.org – I got to the part where I'm supposed to partition Mint. I've got a 500GB hard drive, and I thought I'd give 300GB to LM--but I'm unclear about using ext2, 3 or 4. What about the swap file? Is that automatic? Thanks, 2cen (HowTos)