Best filesystem for use with multiple OS? [duplicate]

"Sorry... but there's no such thing

NTFS is usable in Linux; but certainly far from optimal (the best ones run on FUSE).

there's ext2 for windows; but needs some extensions and configurations."

"How are you intending to share the files?

If you are plugging directly into the SATA connections, NTFS might be the most useful because all the computers you listed can read it. This will get you the fastest file access, but would be a royal pain going from computer to computer.

If you are carrying the disk from computer to computer and connecting with a USB, it won't matter much as the USB won't be as fast as the disk itself could go, and choosing an FS for speed won't buy you much. In this case, FAT32 may be a reasonable choice, but NTFS would be okay.

If you are putting the disk on the network, then the actual FS format matters little as you can export it with NFS or SMB or whatever else you want it to look like. What matters here is you have a 1Gig ethernet connection. This ethernet connection will still be slower than the disks, but faster than USB2 conenctions. I find this works pretty well for my video projects."