Talk:Hierarchical File System

From Wikipedia, the free encyclopedia
Jump to: navigation, search
WikiProject Apple Inc. (Rated Start-class, High-importance)
WikiProject icon This article is within the scope of WikiProject Apple Inc., a collaborative effort to improve the coverage of Apple, Macintosh, iOS and related topics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.
Start-Class article Start  This article has been rated as Start-Class on the project's quality scale.
Checklist icon
 High  This article has been rated as High-importance on the project's importance scale.


First sentence - computers and hierarchical file systems existed long before the Apple ; clarify by saying "On microcmputer systems" —Preceding unsigned comment added by (talk) 13:50, 21 October 2010 (UTC)

First paragraph under history needs editing to reflect accurate information on MFS. MFS permits file names of up to 255 characters in length (not 31). Depending on which version of the Finder used, either a 63 characters (very early Finder) or 31 character (later Finder) limit is further imposed. 00:13, 3 May 2006 (UTC)

Source? AlistairMcMillan 14:24, 7 May 2006 (UTC)
Macintosh Q&A (March 93) see answer to question 3 23:55, 8 May 2006 (UTC)
Now here: SimonReznick (talk) 23:30, 17 June 2009 (UTC)

Dig Bisques[edit]

In the external link to MacTech's November 1985 article on HFS File Structure Explained one of the example catalog node (Cnode) names is "Letter to Birks, Druffey, & Co." This seems to be a fairly coincidental name, as it very nearly matches the last names of Patrick Dirks and Bill Bruffy, who have been credited in this Wikipedia article with doing work on creating HFS. Now if only someone (other than Dan Allen) can verify his book "On Macintosh Programming" (ISBN 0-201-51737-X) contains the reference. 04:40, 9 May 2006 (UTC)

U.S. Patent 4945475 lists Bill M. Bruffey (note the subtle spelling difference) and Patrick W. Dirks as inventors of HFS. The patent was granted July 31, 1990, filed November 21, 1989, and is a continuation of an application filed October 30, 1986. It seems to contain a fairly technical description of a hierarchical filing system in general and not all of the specifics of the HFS found in Mac OS. The assignee of the patent is Apple Computer, Inc. According to, the inside flap of the book "Inside the JavaOS Operating System" (ISBN 0-201-18393-5) says that: "...Bill Bruffey of the MacOS group[...] is a great engineer who designed the Mac's innovative file system--the Hierarchical File System (HFS)." 03:32, 11 May 2006 (UTC)

Tracks and sectors[edit]

I skimmed the main article and may have missed it, but if I did, somebody might point it out here.

Does Apple's Hierarchical File System let you write directly to tracks and sectors?

I found a lot of links to go somewhere else, but I looked all over this article for some kind of a clue as to how the file system works. Instead of describing the Hierarchical File System in ways that may contrast it with the PC FAT system (which I have no idea how it works), there ought to be a description comparing it with the only file system I am familiar with, CBM DOS with its reliance on a BAM. Somewhere there should be at least one reference to a Track or a Sector. Where is it? As it stands, the main article doesn't make any sense, and essentially tells me to go somewhere else to figure out what they are talking about. I am not a Unix programmer, nor am I a PC user/programmer. Dexter Nextnumber (talk) 22:19, 22 December 2009 (UTC)