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I think that this should be merged with HFS Plus as it is not a new filesystem but simply a flag in the HFS+ filesystem that indicates the implementations to use case sentitiveness.

I concur. – Mipadi 04:47, August 16, 2005 (UTC)
I strongly disagree. I think there is more to it than simply a flag. And HFSX is not simply a case sensitive version of HFS+. Please note that Apple's HFS Plus Volume Format page hasn't been updated to reflect any changes in Tiger. AlistairMcMillan 10:05, 16 August 2005 (UTC)
After downloading the source for diskdev_cmds [1], I see Claunia was right. The only difference on disk IS a flag in the B-Tree headers. So apart from that and the guarantee that an HFSX volume won't have an HFS wrapper, HFS + and HFSX are identical. Or maybe I'm missing something. If that is all that is different, then what did Apple mean by this... "HFSX is an extension to HFS Plus to allow additional features that are incompatible with HFS Plus." [2] AlistairMcMillan 22:11, 16 August 2005 (UTC)