Re: Ewen Wannop's ProDOS Directory Info

["Connor Sterner" <connor04@verizon.net>]

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"Bill Garber" <willy46pa@comcast.net> wrote in message
5-adnUsodf745K7d4p2dnA@comcast.com">news:5-adnUsodf745K7d4p2dnA@comcast.com...
>
> -------------------------------------------------
> 'ProDOS directories, quoted from Ewen Wannop.'
> -------------------------------------------------
>
> "Apple, in their infinite wisdom, decided to limit the
> main directory in ProDOS to 51 files. Sub-directories
> can of course be of any size, and will dynamically
> grow as needed as files are added. They do not shrink
> when files are deleted however, so disk space, once
> consumed is lost as far as storing files is concerned."
>
> "I suspect the 51 file limit was probably due to the
> fact the ProDOS historically grew out of SOS, the
> Apple /// operating system."
>
> "It is very easy to increase the size of the main
> directory, and many, many years ago, I wrote a little
> utility to do this. I can't remember now what I called
> it, and it may or may not be found on the TABBS Library
> Archive CD sold by Syndicomm. A quick search did not
> show anything that matched where I thought it might be,
> but a closer search may find it."
>
> "With that small utility, you could increase the main
> directory to any size you liked. Having tried this,
> I found various problems ensued. ProDOS does not expect
> the size of the main directory to be increased, and
> although most operations seemed to work smoothly,
> AppleWorks, and other applications that operate
> directly on the directory blocks, would cause
> corruption of filenames and worse, when you tried
> to write that 52nd file."
>
> "So increase the size of the directory at your own peril,
> and be prepared for some corruption of the directory with
> certain applications!"
>
> 'End Quote'
>
> Bill @ GarberStreet Enterprizez };-)
> Web Site - http://garberstreet.netfirms.com
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>
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