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I really dont know what any of them mean. I know that NTFS and FAT and that they are associated for Windows....For Linux, which is the best File system that gets the best performance? I have it set to Ext 4.

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"best" is relative - there are some other filesystems that are extrememly specialized for special situations, but for general usage ext4 works nicely.

You can't use FAT or NTFS because they don't support the extended file attributes that Ubuntu needs (mainly a security thing).

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ext4 is good as per @jrg you cant use FAT or NTFS filesystem in ubuntu. but you can read files from FAT and NTFS filesystem.

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