IMHO Apple is very forthcoming with all of the low level workings for OS X, check here for info on HFS http://developer.apple.com/technotes/tn/tn1150.html The search at developer.apple.com is very effective and finding pointers to tech documents and other documentation for the internal workings of X. -Brian On May 24, 2004, at 8:04 PM, Matt Jaffa wrote: Hi, I was wondering if there was some sort of whitesheet, datasheet, whatever they are called, that explains how these file systems are arranged, Like for FAT, Microsoft released a PDF on how FAT12,FAT16, and FAT32 work, with diagrams and everything, explaining the boot sector and how free space is kept track of and the directory structure. Anything like this exist for Apples Filesystems? do they release that info? Thanks, Matt _______________________________________________ darwin-kernel mailing list | darwin-kernel@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored. _______________________________________________ darwin-kernel mailing list | darwin-kernel@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.